Halophytic Flora of Argentina: A Checklist and an Analysis of its Diversity

Abstract

Saline terrestrial areas represent 3.32 % (92,600 km²) of the Argentine continental territory. Halophytic vegetation is recognized in these regions like edaphic or azonal depending on its association with saline or alkaline soils, not on the ecoregion’s climates. The aims of this contribution are: (1) to provide the first preliminary checklist of native vascular plants growing and completing their life cycle for saline continental areas of Argentina, and (2) to determine its endemism’s, life forms and the ecoregions where these halophytes have been collected. A total of 673 halophytic taxa within 291 genera and 64 families of vascular plants were recorded in the various saline habitats of Argentina, 23.17 % of them are endemics. The halophytic flora represents 6.49 % of the total vascular flora of Argentina. Diversity shows a decreasing tendency from those geosystems that are less affected by hydrohalomorphic processes to those physically characterized by the maximum expression of the flooding-salinization processes. Historical factors along with occupational factors may have contributed in defining the current floristic pattern. Temporal fluctuations in depth, electrical conductivity and ionic composition of groundwater, are the main environmental factors determining the compositional variation of the saline vegetation of the country. Nearly all halophytes are flowering plants, only 0.30 % correspond to Ferns. Dicots comprised 67.31 % of the total (453 taxa in 48 families), while the remainder consisted of 216 taxa of Monocots (14 families), and only two Gymnosperm species. The family with the highest number of genera was: Asteraceae (53) followed by Poaceae (50), Fabaceae (21), Amaranthaceae (13), Solanaceae and Cactaceae (11), and Verbenaceae (10). The most represented genera are Atriplex (19), Lycium (18 taxa), Senecio (16), Chloris (12), Baccharis (12), Deyeuxia and Hordeum (11), Heliotropium (10), Gomphrena, Sporobolus, Solanum and Prosopis (9), Grindelia (8), Distichlis, Junellia, Glandularia (7) and Euphorbia, Aristida, Eragrostis and Festuca with 6 species. Regarding the life-form forms spectra, Hemicryptophytes are the predominant life-form and constitute 52.9 % of all recorded species, followed by Chamaephytes (21.84 %), Therophytes (10.10 %), Phanerophytes (7.13 %), Geophytes (5.79 %), Succulents (2.08 %), and Parasites (0.15 %). In the study area, the largest number of taxa was found in the Dry Chaco (26.95 %) followed by Espinal (18.31 %), Pampa (11.97 %), Patagonian Steppe (8.01 %), Puna (6.97 %), Monte of Plains and Plateaus (9.69 %), Humid Chaco (4.57 %), High Andes (4.06 %), Monte of Hills and Valleys (3.12 %), Iberá Marshes (2.81 %), Paraná Flooded Savanna (2.71 %), and Mesopotamian Savanna (0.83 %). When comparing the distribution of total endemics between the different ecoregions, Dry Chaco (33.65 %), appeared with the highest values followed Monte of Plains and Plateaus (18.27 %), Espinal (16.35 %); Patagonian Steppe (12.02 %), Puna (8 %) and Pampa (7.2 %). Surprisingly the number of halophytic taxa that grows in Argentina is very high, representing nearly 22 % of the total number cited for the world.

Appendix

List of halophytic taxa of Argentina with its status, life forms, and ecoregions and reference site where they grows

Family	Genus	Species	Status	Life form	Ecoregions	Reference site
Acanthaceae	Justicia	J. gilliesii (Nees) Benth.	Endemic	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Ruellia	R. simplex Wright	Native	Chamaephyte	Espinal	Córdoba, Mar Chiquita
Aizoaceae	Sesuvium	S. portulacastrum (L.) L.	Native	Hemicryptophyte	Dry Chaco, Pampa	Buenos Aires, Arroyo Saladillo & NR 205
	Trianthema	T. argentina Hunz. & Cocucci	Endemic	Therophyte	Monte of Hills and Valleys	La Rioja, near Los Colorados
Alismataceae	Sagittaria	S. montevidensis Cham. & Schltdl. subsp. montevidensis	Native	Geophyte	Espinal	Córdoba, Laguna La Salada
Alliaceae	Tristagma	T. ameghinoi (Speg.) Speg.	Native	Hemicryptophyte	Patagonian Steppe	Chubut, Salina El Molle
		T. patagonicum (Baker) Traub	Native	Hemicryptophyte	Patagonian Steppe	Chubut, Valle del Lago Blanco
Amaranthaceae	Allenrolfea	A. patagonica (Moq.) Kuntze	Endemic	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Catamarca, Salinas Grandes
		A. vaginata (Griseb.) Kuntze	Endemic	Chamaephyte	Dry Chaco, Espinal, Monte of Hills and Valleys, Monte of Plains and Plateaus	Córdoba, Mar Chiquita
	Alternanthera	A. nodifera (Moq.) Griseb.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		A. paronychioides A. St.-Hil. subsp. chacoënsis (Morong ex Morong & Britton) Pedersen	Native	Hemicryptophyte	Dry Chaco	Formosa, La Rinconada
	Amaranthus	A. muricatus (Moq.) Hieron.	Native	Hemicryptophyte	Espinal, Monte of Hills and Valleys	Catamarca, Belén
		A. standleyanus Parodi ex Covas	Native	Therophyte	Dry Chaco	Santiago del Estero, Salinas Grandes
	Atriplex	A. argentina Speg.	Endemic	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Buenos Aires, Salitral de la Vidriera
		A. boecheri Aellen	Endemic	Chamaephyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		A. cordobensis Gand. & Stuck. subsp. cordobensis	Endemic	Chamaephyte	Dry Chaco, Espinal	Córdoba, Mar Chiquita
		A. cordobensis Gand. & Stuck. subsp. grandibracteata Múlgura	Endemic	Chamaephyte	Dry Chaco, Puna	Jujuy, Salinas Grandes
		A. crenatifolia Chodat & Wilczek	Endemic	Chamaephyte	Monte of Plains and Plateaus	San Luis, Salinas del Bebedero
		A. deserticola Phil.	Native	Chamaephyte	Dry Chaco, Puna	Jujuy, Salinas Grandes
		A. imbricata (Moq.) D. Dietr. var. imbricata	Native	Chamaephyte	Puna	Salta, Salar de Pocitos
		A. lampa (Moq.) D. Dietr.	Endemic	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus, Patagonian Steppe	San Juan, Salina de Mascasín
		A. lithophila A. Soriano	Endemic	Chamaephyte	Dry Chaco	La Rioja, Salina de Mascasín
		A. mendozensis Speg.	Endemic	Chamaephyte	Monte of Plains and Plateaus	Mendoza, NR 7, km 913
		A. montevidense Spreng.	Native	Chamaephyte	Dry Chaco, Mesopotamian Savanna, Pampa, Patagonian Steppe	Chubut, Salina Chica, Península Valdés
		A. nitrophiloides A. Soriano ex Múlgura	Native	Chamaephyte	Puna	Jujuy, Laguna de los Pozuelos
		A. oreophila Phil.	Native	Therophyte	Monte of Plains and Plateaus	Mendoza, Atuel
		A. pamparum Griseb.	Native	Chamaephyte	Dry Chaco, Pampa	Tucumán, El Puestito
		A. patagonica (Moq.) D. Dietr.	Endemic	Chamaephyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		A. quixadensis Del Vitto, Múlgura & Petenatti	Endemic	Chamaephyte	Dry Chaco	San Luis, NP Sierra de las Quijadas
		A. sagittifolia Speg.	Endemic	Chamaephyte	Patagonian Steppe	Patagonia Occidental
		A. spegazzinii A. Soriano ex Múlgura	Endemic	Chamaephyte	Monte of Plains and Plateaus	San Juan, 40 km S from Caucete
		A. undulata (Moq.) D. Dietr.	Endemic	Chamaephyte	Espinal	Buenos Aires, Bahía Blanca Estuary
	Chenopodium	C. parodii Aellen	Endemic	Therophyte	Patagonian Steppe	Chubut, Estancia Quichaura-Tecka
	Gomphrena	G. boliviana Moq. f. boliviana	Native	Therophyte	Dry Chaco	La Rioja, El Quicho
		G. elegans Mart. var. mesopotamica Pedersen	Endemic	Hemicryptophyte	Espinal	Corrientes, NR 14, before the Río Mocoretá
		G. martiana Gillies ex Moq. var. martiana	Native	Therophyte	Dry Chaco	Córdoba, Salinas Grandes
		G. mendocina (Phil.) R.E. Fr. subsp. mendocina	Endemic	Therophyte	Dry Chaco	San Juan, Salina de Mascasín
		G. perennis L. var. perennis	Native	Hemicryptophyte	Espinal	Entre Ríos, Ombúes to El Yunque
		G. pulchella Mart. subsp. pulchella	Native	Hemicryptophyte	Espinal	Santa Fe, Río Salado
		G. tomentosa (Griseb.) R.E. Fr. var. ruiz-lealii Subils & Hunz.	Native	Hemicryptophyte	Monte of Hills and Valleys	San Juan, Ischigualasto
		G. tomentosa (Griseb.) R.E. Fr. var. tomentosa	Native	Hemicryptophyte	Dry Chaco	Catamarca, Salinas Grandes
	Heterostachys	H. olivascens (Speg.) Speg.	Endemic	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus	Río Negro, PR 58, 17 km N from intersection with PR 61
		H. ritteriana (Moq.) Ung.-Sternb.	Native	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Mendoza, Pampa Amarilla
	Holmbergia	H. tweedii (Moq.) Speg.	Native	Chamaephyte	Dry Chaco, Espinal	Córdoba, Mar Chiquita
		Nitrophila	N. australis Chodat & Wilczek var. australis	Endemic	Hemicryptophyte	Monte of Hills and Valleys	Catamarca, Santa María
			N. australis Chodat & Wilczek var. kuntzei (Ulbr.) A. Soriano	Endemic	Chamaephyte	Patagonian Steppe	Patagonia Occidental
		Oxybasis	O. macrosperma (Hook. f.) S. Fuentes, Uotila & Borsch	Native	Therophyte	Espinal, Pampa	San Luis, Laguna Sayape
		Pfaffia	P. glomerata (Spreng.) Pedersen	Native	Hemicryptophyte	Dry Chaco	Salta, 54 km NE from J.V.González, road to Puerta Blanca
		Sarcocornia	S. ambigua (Michx.) M.A. Alonso & M.B. Crespo	Native	Chamaephyte	Dry Chaco, Pampa, Monte of Plains and Plateaus, Patagonian Steppe	Tierra del Fuego, Bahía de San Sebastián
			S. neei (Lag.) M.A. Alonso & M.B. Crespo	Native	Chamaephyte	Pampa	Buenos Aires, Arroyo Las Garzas & NR 205
		Suaeda	S. argentinensis A. Soriano	Native	Chamaephyte	Espinal, Patagonian Steppe	Chubut, Salina Grande, Península Valdés
			S. densiflora A. Soriano ex Giusti	Endemic	Therophyte	Espinal	Buenos Aires, Laguna La Salada
			S. divaricata Moq (Fig. 9.6)	Native	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus, Patagonian Steppe	Córdoba, Salinas Grandes
			S. neuquenensis M.A. Alonso, Conticello & Cerazo	Endemic	Therophyte	Monte of Plains and Plateaus	Neuquén, Los Barreales
			S. patagonica Speg.	Native	Therophyte	Espinal, Pampa, Patagonian Steppe	Buenos Aires, Laguna La Salada
Amaryllidaceae	Habranthus	H. andalgalensis Ravenna	Endemic	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
		H. gracilifolius Herb.	Native	Geophyte	Dry Chaco, Pampa	Córdoba, Salinas Grandes
		H. jamesonii (Baker) Ravenna	Endemic	Geophyte	Espinal	Buenos Aires, Salitral de la Vidriera
	Hieronymiella	H. clidanthoides Pax	Endemic	Hemicryptophyte	Dry Chaco	La Rioja, Guayapas
		H. speciosa (R.E. Fr.) Hunz.	Endemic	Hemicryptophyte	Puna	Jujuy, Salinas Grandes
	Rodophiala	R. mendocina (Phil.) Ravenna	Endemic	Geophyte	Monte of Plains and Plateaus	La Pampa, La Reforma
	Zephyranthes	Z. mesochloa Herb. ex Lindl.	Native	Geophyte	Humid Chaco	Chaco, Resistencia
Anacampserotaceae	Grahamia	G. bracteata Hook. & Arn. (Fig. 9.7)	Endemic	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Buenos Aires, Bahía Blanca Estuary
Anacardiaceae	Schinus	S. johnstonii F.A. Barkley	Endemic	Phanerophyte	Espinal	Entre Ríos, Estancia La Vascongada
		S. longifolius (Lindl.) Speg. var. longifolius	Native	Phanerophyte	Iberá Marshes	Corrientes, Lomas de González
Apiaceae	Apium	A. commersonii DC.	Native	Hemicryptophyte	Dry Chaco, Pampa	Buenos Aires, Partido of La Plata
		A. sellowianum H. Wolff	Native	Therophyte	Espinal, Iberá Marshes, Pampa, Paraná Flooded Savanna	Corrientes, Santa Lucía, Salinas Grandes
	Azorella	A. trifurcata (Gaertn.) Pers.	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Atuel
	Cyclospermum	C. leptophyllum (Pers.) Sprague var. leptophyllum	Native	Hemicryptophyte	Espinal	Santa Fe, NR 19 & road to Iturraspe
	Eryngium	E. chubutense Neger ex Dusén	Endemic	Hemicryptophyte	Espinal	Santa Fe, NR 19 & road to Iturraspe
		E. coronatum Hook. & Arn.	Native	Hemicryptophyte	Dry Chaco, Espinal, Iberá Marshes, Paraná Flooded Savanna	Tucumán, Santa Rosa de Leales
		E. ebracteatum Lam.	Native	Hemicryptophyte	Espinal, Pampa	Córdoba, PR 17, near La Para
		E. eburneum Decne.	Native	Hemicryptophyte	Pampa	Buenos Aires, Depresión del Salado
		E. echinatum Urb.	Native	Hemicryptophyte	Pampa, Paraná Flooded Savanna	Entre Ríos, Victoria Department
		E. nudicaule Lam.	Native	Hemicryptophyte	Espinal	Santa Fe, road to Esperanza, Río Salado
	Hydrocotyle	H. bonariensis Lam.	Native	Geophyte	Espinal	Santa Fe, Las Colonias Department
	Mulinum	M. spinosum (Cav.) Pers.	Native	Hemicryptophyte	Patagonian Steppe	Chubut, Salina Chica, Península Valdés
Apocynaceae	Araujia	A. odorata (Hook. & Arn.) Fontella & Goyder	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Aspidosperma	A. quebracho-blanco Schltdl.	Native	Phanerophyte	Dry Chaco, Espinal	La Rioja, Salina de Mascasín
	Metastelma	M. tubatum Griseb.	Endemic	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Philibertia	P. gilliesii Hook. & Arn.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Tweedia	T. brunonis Hook. & Arn.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
Asteraceae	Acmella	A. decumbens (Sm.) R.K. Jansen var. decumbens	Native	Hemicryptophyte	Pampa	Buenos Aires, Tolosa
		A. grisea (Chodat) R.K. Jansen	Native	Hemicryptophyte	Espinal	Corrientes, NR 126, 47 km NW from Sauce
		A. pusilla (Hook. & Arn.) R.K. Jansen	Native	Hemicryptophyte	Mesopotamian Savanna	Corrientes, Paso Naranjito
	Ambrosia	A. tenuifolia Spreng.	Native	Hemicryptophyte	Espinal, Pampa	Córdoba, Mar Chiquita
	Angelphytum	A. aspilioides (Griseb.) H. Rob.	Native	Hemicryptophyte	Dry Chaco	Formosa, Las Lomitas
	Austrobrickellia	A. patens (D. Don ex Hook. & Arn.) R.M. King & H. Rob. var. tomentosa (Hieron.) Ariza & S.E. Freire	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Austroespatorium	A. inulifolium (Kunth) R.M. King & H. Rob.	Native	Chamaephyte	Dry Chaco	Santiago del Estero, PR 5, Pto. El Saladillo
	Baccharis	B. acaulis (Wedd. ex R.E. Fr.) Cabrera	Native	Chamaephyte	Puna	Salta, Minas de Sijes
		B. articulata (Lam.) Pers.	Native	Chamaephyte	Dry Chaco	Santiago del Estero, Belgrano Department
		B. crispa Spreng.	Native	Chamaephyte	Espinal, Pampa	San Luis, Saladillo
		B. darwinii Hook. & Arn.	Native	Chamaephyte	Dry Chaco, Espinal, Humid Chaco, Monte of Plains and Plateaus, Pampa, Patagonian Steppe	Tucumán, Chañar Pozo
		B. divaricata Hauman	Endemic	Chamaephyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		B. dracunculifolia DC.	Native	Chamaephyte	Humid Chaco	Chaco, Pto. Tirol
		B. glutinosa Pers.	Native	Chamaephyte	Dry Chaco, Monte of Hills and Valleys	San Juan, around the airport
		B. juncea (Cass.) Desf.	Native	Chamaephyte	Espinal, Pampa, Patagonian Steppe, Puna	La Pampa, between El Carancho & Acha
		B. phyteuma Heering	Endemic	Chamaephyte	Pampa	Buenos Aires, between Tolosa & Ensenada
		B. salicifolia (Ruiz & Pav.) Pers.	Native	Chamaephyte	Dry Chaco, Espinal	Córdoba, Arroyo Plujunta, between Balnearia & Marull
		B. spartioides (Hook. & Arn. ex DC.) J. Remy	Native	Chamaephyte	Dry Chaco, Espinal, Monte of Hills and Valleys, Monte of Plains and Plateaus, Patagonian Steppe	Mendoza, Pampa Amarilla
		B. tenella Hook. & Arn. (Fig. 9.8)	Endemic	Chamaephyte	Dry Chaco, Espinal, Patagonian Steppe	Córdoba, Salinas Grandes
	Barrosoa	B. candolleana (Hook. & Arn.) R.M. King & H. Rob.	Native	Hemicryptophyte	Espinal	Córdoba, Jeanmaire
	Chaetanthera	C. lanata (Phil.) I.M. Johnst.	Native	Hemicryptophyte	Puna	Reserva de San Guillermo, Río de la Sal
		C. revoluta (Phil.) Cabrera	Native	Therophyte	Puna	La Rioja, General Sarmiento, 13 km E from Salina del Leoncito
		Chaptalia	C. integerrima (Vell.) Burkart	Native	Hemicryptophyte	Humid Chaco	Santiago del Estero, Lagunas Saladas, between PR 56 & Los Juríes
		Chromolaena	C. arnottiana (Griseb.) R.M. King & H. Rob.	Native	Chamaephyte	Espinal	Córdoba, Jeanmarie
			C. christieana (Baker) R.M. King & H. Rob.	Native	Chamaephyte	Dry Chaco	Formosa, ca. 30 km SW Va. Gral. Güemes
			C. hirsuta (Hook. & Arn.) R.M. King & H. Rob.	Native	Chamaephyte	Humid Chaco	Santiago del Estero, Lagunas Saladas, between PR 56 & Los Juríes
			C. squarroso-ramosa (Hieron.) R.M. King & H. Rob.	Native	Hemicryptophyte	Dry Chaco, Espinal	Salta, 17 km E from El Galpón
		Chuquiraga	C. atacamensis Kuntze	Native	Chamaephyte	Puna	Jujuy, along NR 40 to El Moreno
			C. aurea Skottsb.	Endemic	Chamaephyte	Patagonian Steppe	Río Negro, 52 km SW from Los Menucos in direction to Ing. Jacobacci
			C. avellanedae Lorentz	Endemic	Chamaephyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
			C. erinacea D. Don subsp. erinacea	Endemic	Chamaephyte	Espinal, High Andes, Patagonian Steppe	Buenos Aires, Salitral de la Vidriera
			C. erinacea D. Don subsp. hystrix (Don) C. Ezcurra	Endemic	Chamaephyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		Conyza	C. blakei (Cabrera) Cabrera	Native	Therophyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
			C. bonariensis (L.) Cronquist var. angustifolia (Cabrera) Cabrera	Native	Therophyte	Espinal	Córdoba, Mar Chiquita
			C. laevigata (Rich.) Pruski	Native	Therophyte	Espinal	Buenos Aires, Salitral de la Vidriera
			C. lorentzii Griseb.	Native	Therophyte	Espinal	Córdoba, Mar Chiquita
		Cotula	C. mexicana (DC.) Cabrera	Native	Therophyte	Dry Chaco	Córdoba, Pampa de Achala
		Cyclolepis	C. genistoides D. Don	Native	Phanerophyte	Dry Chaco, Espinal, Monte of Plains and Plateaus, Patagonian Steppe	Catamarca, Salinas Grandes
		Doniophyton	D. anomalum (D. Don) Kurtz	Native	Phanerophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		Eiachaenium	E. magellanicum Sch. Bip.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Estancia Las Vegas, Río Coyle
		Flaveria	F. bidentis (L.) Kuntze	Native	Therophyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Santiago del Estero, around Termas de Río Hondo
			F. haumanii Dimitri & Orfila	Native	Therophyte	Espinal, Humid Chaco	Córdoba, between Miramar & Río Plujunta mouth
		Gaillaria	G. megapotamica (Spreng.) Baker var. radiata (Griseb.) Baker	Native	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
		Gamochaeta	G. stachydifolia (Lam.) Cabrera	Native	Hemicryptophyte	Espinal	Buenos Aires, road to Puerto Cuatreros, General Cerri
			G. subfalcata (Cabrera) Cabrera	Native	Therophyte	Pampa	Santa Fe, La Samosita, Santa Lucía
		Grindelia	G. anethifolia (Phil.) A. Bartoli & Tortosa var. anethifolia	Native	Hemicryptophyte	Patagonian Steppe	Neuquén, La Negra
			G. brachystephana Griseb.	Endemic	Hemicryptophyte	Dry Chaco, Espinal, Iberá Marshes	Corrientes, Estero Pucú
			G. cabrerae Ariza var. alatocarpa Ariza	Endemic	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
			G. cabrerae Ariza var. cabrerae	Endemic	Hemicryptophyte	Pampa	Entre Ríos, Victoria
			G. puberula Hook. & Arn.	Native	Chamaephyte	Dry Chaco	Tucumán, Chañar Pozo
			G. pulchella Dunal var. discoidea (Hook. & Arn.) A. Bartoli & Tortosa	Native	Chamaephyte	Pampa	BuenosAires, Depresión del Salado
			G. pulchella Dunal var. pulchella	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	Córdoba, Salinas Grandes
			G. scorzonerifolia Hook. & Arn.	Native	Hemicryptophyte	Espinal, Pampa, Paraná Flooded Savanna	Santa Fe, Coronda
		Gyptis	G. tanacetifolia (Gillies ex Hook. & Arn.) D.J.N. Hind & Flann	Native	Chamaephyte	Pampa	Córdoba, La Carlota
		Holocheilus	H. hieracioides (D. Don) Cabrera	Native	Hemicryptophyte	Espinal	Córdoba, between La Francia & Jeanmaire
		Hymenoxys	H. anthemoides (Juss.) Cass.	Native	Therophyte	Dry Chaco, Espinal, Mesopotamian Savanna, Pampa	Corrientes, Paso Naranjito
			H. cabrerae K.L. Parker	Endemic	Therophyte	Espinal	Buenos Aires, Salitral de la Vidriera
			H. robusta (Rusby) K.L. Parker	Native	Therophyte	Puna	Jujuy, Quebrada de Calete
			H. tweediei Hook. & Arn.	Native	Therophyte	Pampa	Entre Ríos, Ceibas a Médanos
		Hypochaeris	H. chondrilloides (A. Gray) Cabrera	Native	Hemicryptophyte	Espinal, Monte of Hills and Valleys, Monte of Plains and Plateaus, Puna	San Juan, PR 430, Río Jáchal
			H. meyeniana (Walp.) Griseb.	Native	Hemicryptophyte	Puna	Jujuy, Laguna de los Pozuelos
			H. patagonica Cabrera	Endemic	Hemicryptophyte	Patagonian Steppe	Santa Cruz, NR 40, Río Olnie to Bajo Caracoles
			H. petiolaris (Hook. & Arn.) Griseb.	Native	Hemicryptophyte	Pampa	Entre Ríos, Gualeguaychú, Arroyo Ñancay
		Isostigma	I. hoffmannii Kuntze	Native	Hemicryptophyte	Iberá Marshes	Corrientes, NR 12, 20 km S from NR 123
		Lepidophyllum	L. cupressiforme (Lam.) Cass.	Native	Chamaephyte	Patagonian Steppe	Tierra del Fuego, Bahía de San Sebastián
		Lessingianthus	L. rubricaulis (Bonpl.) H. Rob.	Native	Chamaephyte	Humid Chaco, Iberá Marshes, Paraná Flooded Savanna	Santiago del Estero, Lagunas Saladas, between PR 56 & Los Juríes
		Luciliocline	L. subspicata (Wedd.) Anderb. & S.E. Freire	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		Micropsis	M. australis Cabrera	Endemic	Therophyte	Espinal	Buenos Aires, Salitral de la Vidriera
		Mikania	M. cordifolia (L. f.) Willd.	Native	Chamaephyte	Dry Chaco	Santiago del Estero, Río Salado
			M. periplocifolia Hook. & Arn.	Native	Chamaephyte	Espinal, Humid Chaco	Córdoba, Laguna La Salada
			M. urticifolia Hook. & Arn.	Native	Chamaephyte	Espinal	Córdoba, Mar Chiquita
Noticastrum		N. diffusum (Pers.) Cabrera	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Quequén Salado
		N. marginatum (Kunth) Cuatrec.	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Quequén Salado
		N. sericeum (Less.) Less. ex Phil.	Native	Hemicryptophyte	Espinal	Buenos Aires, Laguna La Salada, Pedro Luro
Ocyroe		O. armata (Wedd.) Bonifacino	Native	Chamaephyte	High Andes	Jujuy, Laguna de Vilama
Panphalea		P. bupleurifolia Less.	Native	Hemicryptophyte	Paraná Flooded Savanna	Buenos Aires, Ribera del Río de La Plata: Juan Gerónimo
Parastrephia		P. lucida (Meyen) Cabrera	Native	Chamaephyte	Puna	Jujuy, Salinas Grandes
Parthenium		P. hysterophorus L.	Native	Therophyte	Dry Chaco, Espinal	Buenos Aires, Salinas Chicas
Pascalia		P. glauca Ortega	Native	Hemicryptophyte	Dry Chaco	La Rioja, PR 28, between Portezuelo & San Ramón
Perezia		P. pinnatifida (Humb. & Bonpl. ex Flüggé) Kunth	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
Picrosia		P. longifolia D. Don	Native	Hemicryptophyte	Espinal, Pampa	Santa Fe, Bella Italia
Pluchea		P. microcephala R.K. Godfrey	Native	Hemicryptophyte	Dry Chaco	Catamarca, Salinas Grandes
		P. sagittalis (Lam.) Cabrera	Native	Hemicryptophyte	Dry Chaco	Formosa, ca. 3 Km SW Va. Gral. Güemes
Porophyllum		P. ruderale (Jacq.) Cass.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
Pseudognaphalium		P. cheiranthifolium (Lam.) Hilliard & B.L. Burtt	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Lagunas del Rosario
		P. lacteum (Meyen & Walp.) Anderb.	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		P. leucopeplum (Cabrera) Anderb.	Native	Hemicryptophyte	Espinal	Buenos Aires, La Salada, Pedro Luro
	Pterocaulon	P. lorentzii Malme	Native	Therophyte	Dry Chaco	Tucumán, Chañar Pozo
		P. purpurascens Malme	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		P. virgatum (L.) DC.	Native	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco, Mesopotamian Savanna	Entre Ríos, Ombúes to El Yunque
	Schkuhria	S. pinnata (Lam.) Kuntze ex Thell.	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, NR 34, SE from La Argentina
	Senecio	S. adenophyllus Meyen & Walp.	Native	Chamaephyte	High Andes	Jujuy, Laguna de Vilama
		S. barbarae Cabrera	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		S. filaginoides DC.	Native	Chamaephyte	Espinal, Puna	Jujuy, Salar de Cauchari
		S. goldsackii Phil.	Endemic	Chamaephyte	Monte of Plains and Plateaus	La Pampa, Laguna Curru Lauquen
		S. helgae Cabrera	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		S. humillimus Sch. Bip. ex Wedd.	Native	Hemicryptophyte	Puna	Jujuy, Laguna de Pozuelos
		S. melanopotamicus Cabrera	Endemic	Chamaephyte	Monte of Plains and Plateaus	La Pampa, Salitral Lavalle
		S. nutans Sch. Bip.	Native	Chamaephyte	High Andes, Puna	Catamarca, Salar del Hombre Muerto
		S. pampeanus Cabrera	Native	Hemicryptophyte	Dry Chaco, Espinal, Iberá Marshes, Pampa	Buenos Aires, road to Arroyo Chasicó
		S. pinnatus Poir. var. pinnatus	Native	Chamaephyte	Dry Chaco, Humid Chaco, Mesopotamian Savanna	Santa Fe, Lanteri
		S. pinnatus Poir. var. simplicifolius Cabrera	Endemic	Chamaephyte	Pampa	Entre Ríos, near Parque Unzué
		S. saltensis Hook. & Arn.	Native	Chamaephyte	Espinal, Humid Chaco	Córdoba, Mar Chiquita
		S. scorzonerifolius Meyen & Walp.	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		S. subulatus D. Don ex Hook. & Arn. var. subulatus	Endemic	Chamaephyte	Paraná Flooded Savanna	Buenos Aires, Hudson (F. C. S.)
		S. vira-vira Hieron.	Native	Chamaephyte	Espinal	Buenos Aires, Salitral de la Vidriera
		S. xerophilus Phil. var. xerophilus	Native	Chamaephyte	Puna	Salta, Santa Rosa de Tastil
	Solidago	S. argentinensis López Laph. & Semple	Native	Chamaephyte	Monte of Plains and Plateaus	Mendoza, Río Salado Superior
		S. chilensis Meyen var. chilensis	Native	Hemicryptophyte	Espinal	Buenos Aires, Laguna La Salada
	Soliva	S. macrocephala Cabrera	Native	Therophyte	Espinal	Entre Ríos, Federación
	Symphyotrichum	S. patagonicum (Cabrera) G.L. Nesom	Endemic	Therophyte	Patagonian Steppe	Santa Cruz, Costa Oeste, San Martín
		S. squamatum (Spreng.) G.L. Nesom	Native	Hemicryptophyte	Pampa	Buenos Aires, Estancia San Miguel
	Taraxacum	T. gilliesii Hook. & Arn.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, near Esperanza
	Tessaria	T. absinthioides (Hook. & Arn.) DC.	Native	Chamaephyte	Monte of Hills and Valleys	Salta, NR 40, Animaná
		T. dodoneifolia (Hook. & Arn.) Cabrera subsp. dodoneifolia	Native	Chamaephyte	Dry Chaco, Monte of Hills and Valleys	La Rioja, between Olta & El Dique de Olta
	Trichocline	T. auriculata (Wedd.) Hieron. var. breviscapa Zardini	Endemic	Hemicryptophyte	High Andes	Jujuy, Vilama
		T. reptans (Wedd.) Hieron.	Native	Hemicryptophyte	Espinal	Buenos Aires, Salinas Chicas
	Trixis	T. cacalioides (Kunth) D. Don	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		T. divaricata (Kunth) Spreng. subsp. divaricata	Native	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
	Verbesina	V. encelioides (Cav.) Benth. & Hook. f. ex A. Gray	Native	Therophyte	Monte of Plains and Plateaus	Mendoza, Campos de Salas
	Werneria	W. pygmaea Gillies ex Hook. & Arn.	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
Boraginaceae	Cryptantha	C. mendocina I.M. Johnst.	Endemic	Therophyte	Espinal	La Pampa, NR 148, Cano Quemado
	Ehretia	E. cortesia Gottschling	Native	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus	Córdoba, Salinas Grandes
	Heliotropium	H. catamarcense I.M. Johnst.	Endemic	Hemicryptophyte	Dry Chaco	San Juan, Salina de Mascasín
		H. chrysanthum Phil.	Endemic	Hemicryptophyte	Dry Chaco	Mendoza, Salinas del Diamante
		H. curassavicum L. var. argentinum I.M. Johnst.	Native	Hemicryptophyte	Espinal, Pampa	La Pampa, NR 148, Estancia Poitaque
		H. curassavicum L. var. curassavicum	Native	Hemicryptophyte	Dry Chaco, Espinal, Monte of Hills and Valleys, Monte of Plains and Plateaus, Paraná Flooded Savanna	Salta, Luracatao, Laguna Brealito
		H. johnstonii Ragonese	Endemic	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	La Rioja, Salina La Antigua
		H. mendocinum Phil.	Endemic	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	San Luis, Salina del Bebedero
		H. nicotianaefolium Poir.	Native	Hemicryptophyte	Humid Chaco	Formosa, NR 11, Río Salado
		H. procumbens Mill.	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		H. schreiteri I.M. Johnst.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Lucio V. Mansilla
		H. veronicifolium Griseb.	Native	Hemicryptophyte	Dry Chaco	Salta, Coronel Moldes
	Phacelia	P. cumingii (Benth.) A. Gray	Native	Therophyte	Puna	San Juan, Reserva de San Guillermo, Río de La Sal
	Plagiobothrys	P. calandrinioides (Phil.) I.M. Johnst.	Native	Therophyte	Patagonian Steppe	Santa Cruz, 7 km S from Cañadón del Río Seco
Brassicaceae	Delpinophytum	D. patagonicum (Speg.) Speg.	Endemic	Chamaephyte	Patagonian Steppe	Santa Cruz, 5 km S from NR 3, San Julián
	Descurainia	D. antarctica (E. Fourn.) O.E. Schulz	Native	Hemicryptophyte	Monte of Plains and Plateaus	Río Negro, Cipolletti
		D. erodiifolia (Phil.) Prantl ex Reiche	Native	Hemicryptophyte	Dry Chaco, Espinal, Pampa	Catamarca, Salar de Pipanaco
	Exalimolobos	E. burkartii (Romanczuk & Boelcke) Al-Shehbaz & C.D. Bailey	Endemic	Therophyte	Dry Chaco	Tucumán, Las Salinas
	Lepidium	L. auriculatum Regel & Körn.	Native	Therophyte	Dry Chaco, Espinal, Pampa	Córdoba, NR 35, 35 km N from Huinca Renancó
		L. gracile (Chodat & Hassl.) Boelcke	Native	Therophyte	Iberá Marshes	Corrientes, Salinas Grandes
		L. myrianthum Phil.	Native	Therophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		L. parodii Thell.	Endemic	Hemicryptophyte	Pampa	Buenos Aires, La Plata
		L. pedersenii Al-Shehbaz	Native	Therophyte	Humid Chaco	Formosa, NR 11, 4 km S from Tatane, Río Salado
		L. spicatum Desv.	Native	Hemicryptophyte	Pampa	Santa Fe, Laguna del Chañar
		L. stuckertianum (Thell.) Boelcke	Endemic	Therophyte	Espinal	Corrientes, NR 126, 47 km W from Sauce
	Neuontobotrys	N. tarapacana (Phil.) Al-Shehbaz	Native	Hemicryptophyte	Puna	Salta, Salar de Gallego
	Schizopetalon	S. rupestre (Barnéoud) Reiche	Native	Therophyte	High Andes	San Juan, Reserva de San Guillermo, Río de la Sal
Bromeliaceae	Bromelia	B. urbaniana (Mez) L.B. Sm.	Native	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
	Dyckia	D. floribunda Griseb. var. floribunda	Native	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
		D. ragonesei A. Cast.	Endemic	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
Cactaceae	Cereus	C. aethiops Haw.	Native	Succulent	Monte of Plains and Plateaus	San Luis, Salinas del Bebedero
		C. argentinensis Britton & Rose	Endemic	Succulent	Iberá Marshes	Corrientes, PR 152, 2 Km N from Cerrito
		C. forbesii Otto ex C.F. Först.	Native	Succulent	Dry Chaco	Córdoba, Salinas Grandes
	Cleistocactus	C. baumannii (Lem.) Lem.	Native	Succulent	Dry Chaco, Espinal	Entre Ríos, Ombúes to El Yunque
	Echinopsis	E. leucantha (Gillies ex Salm-Dyck) Walp.	Endemic	Succulent	Dry Chaco, Monte of Plains and Plateaus	Córdoba, Salinas Grandes
	Gymnocalycium	G. ragonesei A. Cast.	Endemic	Succulent	Dry Chaco	Catamarca, Salinas Grandes
		G. schickendantzii (F.A.C. Weber) Britton & Rose var. schickendantzii	Endemic	Succulent	Dry Chaco	Córdoba, Salinas Grandes
	Maihueniopsis	M. glomerata (Haw.) R. Kiesling	Native	Chamaephyte	Dry Chaco	La Rioja, Salina de Mascasín
	Opuntia	O. sulphurea Gillies ex Salm-Dyck var. hildmannii (Fric) Backeb.	Native	Succulent	Dry Chaco	La Rioja, Salina de Mascasín
		O. sulphurea Gillies ex Salm-Dyck var. sulphurea	Native	Succulent	Dry Chaco, Monte of Plains and Plateaus	Santiago del Estero, 35 km S from road to Isla Verde, along NR 9
	Pterocactus	P. tuberosus (Pfeiff.) Britton & Rose f. tuberosus	Endemic	Succulent	Dry Chaco	La Rioja, Salina de Mascasín
	Setiechinopsis	S. mirabilis (Speg.) de Haas	Endemic	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus	Mendoza, Fray Luis Beltrán
	Stetsonia	S. coryne (Salm-Dyck) Britton & Rose (Fig. 9.9)	Native	Succulent	Dry Chaco	Catamarca, Salinas Grandes
	Tephrocactus	T. aoracanthus (Lem.) Lem. (Fig. 9.10)	Endemic	Geophyte	Dry Chaco, Monte of Plains and Plateaus	Córdoba, Salinas Grandes
		T. articulatus (Pfeiff.) Backeb. var. articulatus	Endemic	Succulent	Dry Chaco	La Rioja, NR 38, between Castro Barros y Serrezuela
	Trichocereus	T. huascha (F.A.C. Weber) Britton & Rose var. huascha	Endemic	Succulent	Dry Chaco	La Rioja, between Pozo de la Vaca & Pozo Redondo
		T. strigosus (Salm-Dyck) Britton & Rose	Endemic	Succulent	Monte of Plains and Plateaus	Mendoza, Campos de Salas
Calyceraceae	Acicarpha	A.tribuloides Juss.	Native	Therophyte	Pampa	Santa Fe, Coronada
	Boopis	B. anthemoides Juss. var. anthemoides	Endemic	Hemicryptophyte	Pampa, Patagonian Steppe	Mendoza, Laguna Coipo Leuquén
		B.anthemoides Juss. var. subintegrifolia Hicken	Endemic	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		B. australis Decne.	Native	Hemicryptophyte	Monte of Plains and Plateaus	Neuquén, Zapala (F.C.S.)
	Nastanthus	N. ventosus (Meyen) Miers	Native	Hemicryptophyte	High Andes	La Rioja, Laguna Brava
Capparaceae	Capparis	C. atamisquea Kuntze	Native	Phanerophyte	Dry Chaco	Catamarca, Salar de Pipanaco
Caryophyllaceae	Arenaria	A. rivularis Phil.	Native	Hemicryptophyte	High Andes	La Rioja, Laguna Brava
		A. serpens Kunth	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Atuel
	Cardionema	C. ramosissima (Weinm.) A. Nelson & J.F. Macbr.	Native	Hemicryptophyte	Monte of Plains and Plateaus	La Pampa, La Reforma
		C. rosetta (Cambess.) A.Nelson & J.F. Macbr.	Native	Hemicryptophyte	Iberá Marshes	Corrientes, Santa Lucía, Salinas Grandes
	Colobanthus	C. quitensis (Kunth) Bartl.	Native	Hemicryptophyte	Puna	San Juan, Parque Nacional San Guillermo, Vega de Los Leones
	Spergula	S. grandis Pers.	Native	Hemicryptophyte	Pampa	Santa Fe, La Picaza
		S. laevis (Cambess.) D. Dietr.	Native	Hemicryptophyte	Pampa	Buenos Aires, Estancia San Carlos
		S. platensis (Cambess.) Shinners var. platensis	Native	Hemicryptophyte	Pampa, Paraná Flooded Savanna	Entre Ríos, Ceibas
		S. ramosa (Cambess.) D. Dietr. subsp. ramosa	Native	Hemicryptophyte	Espinal, Pampa	Córdoba, Laguna Las Salinas
		S. villosa Pers.	Native	Hemicryptophyte	Pampa	Córdoba, NR 7, 4 km E from General Levalle
Celastraceae	Maytenus	M. viscifolia Griseb.	Endemic	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
		M. vitis-idaea Griseb. (Fig. 9.11)	Native	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
	Moya	M. spinosa Griseb.	Endemic	Phanerophyte	Dry Chaco	Córdoba, Mar Chiquita
Celtidaceae	Celtis	C. chichape (Wedd.) Miq.	Native	Phanerophyte	Dry Chaco	Córdoba, Mar Chiquita
Commelinaceae	Commelina	C. erecta L. var. angustifolia (Michx.) Fernald	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
	Tripogandra	T. glandulosa (Seub.) Rohweder	Native	Hemicryptophyte	Espinal	Corrientes, Monte Caseros, La Potota
Convolvulaceae	Cressa	C. nudicaulis Griseb. (Fig. 9.12)	Endemic	Geophyte	Dry Chaco, Monte of Plains and Plateaus	Catamarca, Salina de Pipanaco
		C. truxillensis Kunth	Native	Geophyte	Espinal, Pampa, Patagonian Steppe	Chubut, Laguna Cona
	Evolvulus	E. arizonicus A. Gray	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		E. glomeratus Nees & Mart. subsp. grandiflorus (D. Parodi) Ooststr.	Native	Hemicryptophyte	Iberá Marshes	Corrientes, NR 12, 10 km S from NR 123
		E. sericeus Sw. var. elongatus (Choisy) O’Donell	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
	Ipomoea	I. amnicola Morong	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, NR 9, between Río Saladillo & Isla Verde
		I. stuckertii O’Donell	Endemic	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
	Jacquemontia	J. decumbens O’Donell	Native	Chamaephyte	Iberá Marshes	Corrientes, NR 12, 10 km S from NR 123
Cucurbitaceae	Cucurbitellia	C. asperata (Gillies ex Hook. & Arn.) Walp.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
	Halosicyos	H. ragonesei Mart. Crov. (Fig. 9.13)	Endemic	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
Cyperaceae	Amphiscirpus	A. nevadensis (S. Watson) Oteng-Yeb.	Native	Hemicryptophyte	High Andes, Puna	Salta, Salar de Pocitos
	Bolboeschoenus	B. maritimus (L.) Palla ssp. paludosus (A. Nelson) T. Koyama	Native	Geophyte	Espinal	Córdoba, Mar Chiquita
	Bulbostylis	B. juncoides (Vahl) Kük. ex Herter var. juncoides	Native	Hemicryptophyte	Humid Chaco	Santa Fe, San Vicente
	Carex	C. sororia Kunth subsp. sororia	Native	Hemicryptophyte	Humid Chaco	Chaco, La Amalia
		C. vixdentata (Kük. ex Osten) G.A. Wheeler	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Quequén Salado
	Cyperus	C. corymbosus Rottb. var. subnodosus (Nees & Meyen) Kük.	Native	Geophyte	Espinal, Pampa	Córdoba, Jeanmaire
		C. laevigatus L.	Native	Geophyte	Espinal, Pampa	Córdoba, Mar Chiquita
		C. oxylepis Nees ex Steud.	Native	Geophyte	Dry Chaco, Espinal	Santiago del Estero, Isla Verde
	Eleocharis	E. argentina Barros	Endemic	Geophyte	Monte of Plains and Plateaus	Mendoza, Los Morritos
		E. atacamensis Phil.	Native	Geophyte	Monte of Hills and Valleys, Puna	Catamarca, Laguna Blanca
		E. macrostachya Britton	Native	Geophyte	Pampa	Santa Fe, NR 16 & Arroyo Saladillo
		E. pseudoalbibracteata S. González & Guagl.	Native	Geophyte	High Andes	San Juan, Calingasta, near the Gendarmerie Shelter
	Phylloscirpus	P. acaulis (Phil.) Goetgh. & D.A. Simpson	Native	Geophyte	Monte of Plains and Plateaus	Mendoza, Río Salado
	Schoenoplectus	S. americanus (Pers.) Volkart ex Schinz & R. Keller	Native	Geophyte	Espinal, Monte of Hills and Valleys, Puna	Catamarca, Copacabana
		S. californicus (C.A. Mey.) Soják var. californicus	Native	Geophyte	Espinal, Pampa	Córdoba, near Jeanmaire
		S. pungens (Vahl) Palla var. badius (J. Presl & C. Presl) S.G. Sm.	Native	Geophyte	Espinal, Monte of Hills and Valleys, Pampa	Córdoba, Mar Chiquita
		S. pungens (Vahl) Palla var. longispicatus (Britton) S.G. Sm.	Native	Geophyte	Pampa	Santa Fe, between Saneti Spíritu & San Eduardo
		S. pungens (Vahl) Palla var. pungens	Native	Geophyte	Espinal	Córdoba, Río Cuarto or Saladillo, 8 km before W. Escalante
Ephedraceae	Ephedra	E. rupestris Benth.	Native	Chamaephyte	Puna	Jujuy, Laguna de Guayatayoc
		E. triandra Tul. emend. J.H. Hunz.	Native	Chamaephyte	Espinal	Buenos Aires, Salitral de La Vidriera
Equisetaceae	Equisetum	E. bogotense Kunth	Native	Hemicryptophyte	Patagonian Steppe	Mendoza, road to Paso Pehuenche boundary, 2000 m before Arroyo El Macho
		E. giganteum L.	Native	Hemicryptophyte	Monte of Hills and Valleys	San Juan, around the airport
Euphorbiaceae	Croton	C. bonplandianus Baill.	Native	Chamaephyte	Mesopotamian Savanna	Corrientes, Paso Naranjito
	Ditaxis	D. catamarcensis (Griseb.) Pax	Endemic	Chamaephyte	Dry Chaco	Salta, 54 km NE from J.V.González
		D. jablonszkyana Pax & K. Hoffm.	Endemic	Chamaephyte	Dry Chaco	La Rioja, Salina de Mascasín
	Euphorbia	E. berteroana Spreng.	Native	Therophyte	Dry Chaco	Córdoba, Salinas Grandes
		E. eichleri Müll. Arg.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		E. hieronymi Subils	Endemic	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
		E. klotzschii Oudejans var. argentina (Müll. Arg. ex Griseb.) Oudejans	Native	Therophyte	Dry Chaco	San Juan, Salina de Mascasín
		E. klotzschii Oudejans var. klotzschii	Native	Therophyte	Dry Chaco	Santiago del Estero, NR 34, between Pab. Negro y Argentina
		E. serpens Kunth var. microphylla Müll. Arg.	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, NR 34, between Pab. Negro y Argentina
	Jatropha	J. excisa Griseb.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Tragia	T. hieronymii Pax & K. Hoffm.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
Fabaceae	Acacia	A. aroma Gillies ex Hook. & Arn.	Native	Phanerophyte	Dry Chaco	La Rioja, Salina de Mascasín
		A. praecox Griseb.	Native	Phanerophyte	Dry Chaco, Paraná Flooded Savanna	Chaco, Colonia Benítez
	Adesmia	A. horrida Gillies ex Hook. & Arn.	Native	Chamaephyte	Puna	Salta, Salar del Gallego
	Albizia	A. inundata (Mart.) Barneby & J.W. Grimes	Native	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
	Anarthrophyllum	A. rigidum (Gillies ex Hook. & Arn.) Hieron.	Native	Phanerophyte	Patagonian Steppe	Mendoza, Los Hoyos
	Caesalpinia	C. gilliesii (Wall. ex Hook.) D. Dietr.	Native	Phanerophyte	Espinal	Córdoba, Mar Chiquita
	Cercidium	C. praecox (Ruiz & Pav. ex Hook.) Harms subsp. glaucum (Cav.) Burkart & Carter	Endemic	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
	Desmanthus	D. tatuhyensis Hoehne var. brevipes (B.L. Turner) Luckow	Native	Chamaephyte	Dry Chaco	Córdoba, between Jerónimo Cortéz & Altos de Chipión
	Geoffroea	G. decorticans (Gillies ex Hook. & Arn.) Burkart	Native	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
	Glycyrrhiza	G. astragalina Hook. et Arn.	Native	Chamaephyte	Patagonian Steppe	Chubut, Salina Chica, Península Valdés
	Hoffmannseggia	H. erecta Phil.	Endemic	Hemicryptophyte	Monte of Plains and Plateaus, Puna	Salta, Salar de Arizaro
		H. eremophila (Phil.) Burkart ex Ulibarri	Native	Hemicryptophyte	Puna	Salta, Pastos Grandes, Salar Río Grande
		H. glauca (Ortega) Eifert	Native	Hemicryptophyte	Espinal	Buenos Aires, Laguna La Salada
		H. trifoliata Cav.	Native	Hemicryptophyte	Patagonian Steppe	Río Negro, Arroyo Valcheta
	Indigofera	I. parodiana Burkart	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
	Lathyrus	L. magellanicus Lam. var. glaucescens Speg.	Native	Hemicryptophyte	Patagonian Steppe	Tierra del Fuego, Bahía San Sebastián
	Mimosa	M. ephedroides (Gill.) Benth.	Endemic	Chamaephyte	Dry Chaco	La Rioja, Salina de Mascasín
	Mimozyganthus	M. carinatus (Griseb.) Burkart (Fig. 9.14)	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Neptunia	N. pubescens Benth.	Native	Chamaephyte	Humid Chaco	Santa Fe, 2 km S from Berna
	Poissonia	P. heterantha (Griseb.) Lavin	Native	Chamaephyte	Puna	Jujuy, Salinas Grandes
	Prosopidastrum	P. globosum (Hook. et Arn.) Burk.	Endemic	Phanerophyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
	Prosopis	P. alpataco Phil. f. alpataco	Endemic	Phanerophyte	Dry Chaco, Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		P. campestris Griseb.	Endemic	Phanerophyte	Dry Chaco	Córdoba, Mar Chiquita
		P. flexuosa DC. f. flexuosa	Native	Phanerophyte	Dry Chaco	La Rioja, Salina de Mascasín
		P. hassleri Harms var. hassleri	Native	Phanerophyte	Dry Chaco	Santiago del Estero, 35 km S from road to Isla Verde, along NR 9
		P. humilis Gillies ex Hook. & Arn.	Endemic	Chamaephyte	Espinal	Córdoba, Pacheco de Melo
		P. pugionata Burkart	Endemic	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
		P. reptans Benth. var. reptans (Fig. 9.15)	Native	Phanerophyte	Dry Chaco, Humid Chaco	Córdoba, Salinas Grandes
		P. sericantha Hook. et Arn.	Native	Phanerophyte	Dry Chaco	La Rioja, Salina de Mascasín
		P. strombulifera (Lam.) Benth. var. strombulifera	Native	Phanerophyte	Dry Chaco, Monte of Plains and Plateaus	Mendoza, Tunuyán
	Senna	S. acanthoclada (Griseb.) H.S. Irwin & Barneby (Fig. 9.16)	Endemic	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
		S. aphylla (Cav.) H.S. Irwin et Barneby	Native	Phanerophyte	Dry Chaco	Catamarca, Salar de Pipanaco
	Stenodrepanum	S. bergii (Harms)	Endemic	Chamaephyte	Dry Chaco, Humid Chaco	Santa Fe, Arroyo Golondrina & road to Fortín Olmos
	Zuccagnia	Z. punctata Cav.	Endemic	Phanerophyte	Monte of Hills and Valleys	Salta, NR 68, km 69, Arroyo Palo Seco
Frankeniaceae	Frankenia	F. juniperoides (Hieron.) M.N. Correa	Endemic	Chamaephyte	Espinal, Monte of Plains and Plateaus	Buenos Aires, Bahía Blanca Estuary
		F. patagonica Speg.	Endemic	Chamaephyte	Monte of Plains and Plateaus	Río Negro, 31 km S from Valcheta along road to Tembrao
		F. triandra J. Remy	Native	Chamaephyte	Monte of Hills and Valleys, Puna	Catamarca, between Nacimientos & Laguna Blanca
Halophytaceae	Halophytum	H. ameghinoi (Speg.) Speg.	Endemic	Therophyte	Monte of Hills and Valleys	San Luis, Sierra de Las Quijadas
Gesneriaceae	Sinningia	S. tubiflora (Hook.) Fritsch	Native	Hemicryptophyte	Espinal	Entre Ríos, Ombúes to El Yunque
		S. warmingii (Hiern) Chautems	Native	Hemicryptophyte	Dry Chaco	Salta, NR 34, km 1146, Río Saladillo
Iridaceae	Sisyrinchium	S. micranthum Cav. subsp. micranthum	Native	Hemicryptophyte	Espinal	Corrientes, NR 126, 47 km NW from Sauce
		S. pachyrhizum Baker subsp. pachyrhizum	Native	Hemicryptophyte	Paraná Flooded Savanna	Buenos Aires, Baradero
		S. platense I.M. Johnst.	Native	Hemicryptophyte	Pampa	Buenos Aires, Tolosa
Juncaceae	Juncus	J. acutus L. subsp. leopoldii (Parl.) Snogerup	Native	Geophyte	Monte of Hills and Valleys, Pampa	Córdoba, NR 36, km 555, near Huinca Renancó
		J. balticus Willd. subsp. mexicanus (Willd. ex Roem. & Schult.) Kirschner	Native	Geophyte	Puna	Catamarca, Laguna Blanca
		J. bufonius L. var. bufonius	Native	Therophyte	Humid Chaco	Santa Fe, Yugo Quebrado
	Oxychlöe	O. castellanosii Barros	Endemic	Hemicryptophyte	High Andes	San Juan, Quebrada Mula Muerta
Loasaceae	Caiophora	C. coronata (Gillies ex Arn.) Hook. & Arn.	Native	Hemicryptophyte	High Andes	Catamarca, Salina de la Laguna Verde
Malpighiaceae	Tricomaria	T. usillo Hook. & Arn.	Endemic	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
Malvaceae	Cienfuegosia	C. argentina Gürke	Native	Hemicryptophyte	Dry Chaco, Iberá Marshes, Paraná Flooded Savanna	Chaco, Colonia Benítez
		C. drummondii (A. Gray) Lewton	Native	Hemicryptophyte	Dry Chaco	Formosa, Las Lomitas
		C. saraviae Krapov.	Endemic	Chamaephyte	Dry Chaco	Salta, 58 km NE from J.V.González, road to Puerta Blanca
		C. schulzii Krapov.	Endemic	Hemicryptophyte	Dry Chaco	Formosa, Las Lomitas
		C. ulmifolia Fryxell	Native	Hemicryptophyte	Humid Chaco, Iberá Marshes	Corrientes, PR 23, 3 km W from Río Santa Lucía
	Gaya	G. parviflora (Phil.) Krapov.	Native	Hemicryptophyte	Dry Chaco	Formosa, Las Lomitas
	Lecanophora	L. ameghinoi (Speg.) Speg.	Endemic	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		L. ecristata (A. Gray) Krapov.	Endemic	Therophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
	Malvastrum	M. amblyphyllum R.E. Fr.	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, NR 9, along Salinas Grandes, between Río Saladillo & Monte Redondo
		M. coromandelianum (L.) Garcke	Native	Hemicryptophyte	Dry Chaco	Salta, Ojo de Agua
	Malvella	M. leprosa (Ortega) Krapov.	Native	Hemicryptophyte	Pampa	Santa Fe, between Landeta & El Fortín
	Pavonia	P. revoluta Krapov. & Cristóbal	Native	Chamaephyte	Espinal	Córdoba, Mar Chiquita
	Sida	S. dictyocarpa Griseb.	Native	Chamaephyte	Dry Chaco	Córdoba, between Lucio V. Mansilla & El Tuscal
Martyniaceae	Ibicella	I. lutea (Lindl.) Van Eselt	Native	Therophyte	Dry Chaco	Santiago del Estero, NR 9, 35 km S from road to Isla Verde
		I. parodii Abbiatti	Endemic	Therophyte	Dry Chaco	Córdoba, Salinas Grandes
Najadaceae	Najas	N. guadalupensis (Spreng.) Magnus	Native	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
Nyctaginaceae	Allionia	A. choisyi Standl.	Native	Hemicryptophyte	Monte of Plains and Plateaus	San Luis, Salina del Bebedero
		A. incarnata L.	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	La Rioja, Salina de Mascasín
	Boerhavia	B. cordobensis Kuntze	Endemic	Hemicryptophyte	Dry Chaco	La Rioja, PR 21, between Solca & El Unquillal
	Bougainvillea	B. spinosa (Cav.) Heimerl	Native	Phanerophyte	Dry Chaco	Córdoba, Monte del Tigre
Olacaceae	Menodora	M. trifida (Cham. & Schltdl.) Steud.	Native	Chamaephyte	Pampa	Córdoba, PR 6, around Río Saladillo, between Pozo del Molle & Inriville
Oxalidaceae	Oxalis	O. conorrhiza Jacq.	Native	Hemicryptophyte	Espinal	Entre Ríos, Paso Yunque
Passifloraceae	Passiflora	P. elegans Mast.	Native	Hemicryptophyte	Iberá Marshes	Corrientes, Santa Lucía, Salinas Grandes
		P. morifolia Mast.	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, El Saladillo
		P. palmatisecta Mast.	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
Piperaceae	Peperomia	P. comarapana C. DC. f. comarapana	Native	Hemicryptophyte	Espinal	Entre Ríos, Paso Yunque
Plantaginaceae	Plantago	P. maritima L.	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Atuel
		P. myosuros Lam.	Native	Hemicryptophyte	Espinal, Pampa	Córdoba, Mar Chiquita
		P. pulvinata Speg.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Pan de Azúcar
Plumbaginaceae	Limonium	L. brasiliense (Boiss.) Kuntze	Native	Hemicryptophyte	Monte of Plains and Plateaus, Pampa	Santa Fe, Laguna Santa Lucía
Poaceae	Amelichloa	A. ambigua (Speg.) Arriaga & Barkworth	Endemic	Hemicryptophyte	Espinal	Buenos Aires, Salitral de la Vidrera
		A. brachychaeta (Godr.) Arriaga & Barkworth	Native	Hemicryptophyte	Espinal	La Pampa, Salinas Grandes
	Aristida	A. adscensionis L.	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	Santiago del Estero, Salinas de Ambargasta
		A. circinalis Lindm.	Native	Hemicryptophyte	Humid Chaco	Santiago del Estero, J.F.Ibarra, Lagunas Saladas
		A. mendocina Phil.	Native	Hemicryptophyte	Dry Chaco, Humid Chaco, Monte of Plains and Plateaus	La Pampa, Salitral Levalle
		A. pallens Cav. var. pallens	Native	Hemicryptophyte	Humid Chaco	Santiago del Estero, J.F.Ibarra, Lagunas Saladas
		A. spegazzinii Arechav.	Native	Hemicryptophyte	Espinal	Buenos Aires, Salitral de la Vidriera
		A. subulata Henrard	Endemic	Hemicryptophyte	Espinal, Patagonian Steppe	Buenos Aires, Salinas Chicas
	Blepharidachne	B. benthamiana (Hack. ex Kurtz) Hitchc.	Endemic	Hemicryptophyte	Dry Chaco	Catamarca, Salinas Grandes
		B. hitchcockii Lahitte	Endemic	Hemicryptophyte	Dry Chaco	La Rioja, PR 31, between Solca & El Unquillal
	Bothriochloa	B. laguroides (DC.) Herter var. laguroides	Native	Hemicryptophyte	Humid Chaco	Santiago del Estero, Ibarra, Lagunas Saladas
		B. saccharoides (Sw.) Rydb. var. saccharoides	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Quequén Salado
	Bouteloua	B. aristidoides (Kunth) Griseb.	Native	Hemicryptophyte	Dry Chaco, Espinal	Córdoba, Mar Chiquita
		B. barbata Lag.	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	San Juan, Salina de Mascasín
		B. megapotamica (Spreng.) Kuntze	Native	Hemicryptophyte	Espinal	San Luis, Saladillo
	Briza	B. subaristata Lam.	Native	Hemicryptophyte	Pampa	Buenos Aires, Carcalleros, Río Quequén Salado
	Bromus	B. catharticus Vahl var. catharticus	Native	Therophyte	Espinal, Monte of Plains and Plateaus, Puna	Río Negro, Cipolletti
		B. catharticus Vahl var. rupestris (Speg.) Planchuelo & P.M. Peterson	Endemic	Therophyte	Espinal	Buenos Aires, Ing. White, near the Club Naútico
		B. setifolius J. Presl var. brevifolius Nees	Native	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Las Animas, Río Salado
		B. tunicatus Phil.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, San Julián
	Cenchrus	C. chilensis (E. Desv.) Morrone	Native	Hemicryptophyte	High Andes, Puna	Jujuy, Quebrada de Calete
		C. myosuroides Kunth	Native	Hemicryptophyte	Dry Chaco, Espinal	Córdoba, Jeanmaire
		C. pilcomayensis (Mez) Morrone	Native	Hemicryptophyte	Espinal	Santa Fe, near Esteban Rams
	Chaetotropis	C. chilensis Kunth	Native	Hemicryptophyte	Pampa	Santa Fe, between Rufino & Rosetti
		C. elongata (Kunth) Björkman	Native	Hemicryptophyte	Espinal, Pampa	Santa Fe, Capovur
		C. imberbis (Phil.) Björkman	Native	Hemicryptophyte	Espinal, Pampa	La Pampa, Laguna Grande del Guanaco
	Chloris	C. barbata Sw.	Native	Therophyte	Espinal	Santa Fe, 7 km NW from Esperanza
		C. berroi Arechav.	Native	Hemicryptophyte	Pampa	Buenos Aires, Ignacio Correas, Arroyo Pescado
		C. canterae Arechav.	Native	Hemicryptophyte	Espinal, Pampa	Entre Ríos, Concepción del Uruguay
		C. castilloniana Lillo & Parodi var. castilloniana	Native	Hemicryptophyte	Dry Chaco	San Juan, Salina de Mascasín
		C. ciliata Sw. f. breviseta Hack.	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		C. ciliata Sw. f. ciliata	Native	Hemicryptophyte	Pampa	Entre Ríos, Concepción del Uruguay, Arroyo Isletas
		C. halophila Parodi var. halophila	Native	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco, Paraná Flooded Savanna	Santa Fe, Río Salado
		C. halophila Parodi var. humilis Christ	Native	Hemicryptophyte	Monte of Hills and Valleys	Tucumán, Alto de Las Salinas
		C. parvispicula Caro & E.A. Sánchez	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		C. pycnothrix Trin.	Native	Hemicryptophyte	Paraná Flooded Savanna	Corrientes, Corrientes
		C. sesquiflora Burkart	Native	Hemicryptophyte	Pampa	Entre Ríos, Concepción del Uruguay
		C. virgata Sw.	Native	Hemicryptophyte	High Andes	Catamarca, Andes, E of Paso De San Francisco
	Cortaderia	C. rudiuscula Stapf	Native	Hemicryptophyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		C. selloana (Schult. & Schult. f.) Asch. & Graebn.	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus, Paraná Flooded Savanna	Buenos Aires, NP Campos del Tuyú
	Cottea	C. pappophoroides Kunth	Native	Hemicryptophyte	Dry Chaco	Córdona, Salinas Grandes
	Danthonia	D. cirrata Hack. & Arechav.	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Salado
		D. montevidensis Hack. & Arechav.	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Salado
	Deschampsia	D. antarctica E. Desv.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Estancia Tapi Aike
	Deyeuxia	D. crispa Rúgolo & Villav.	Native	Hemicryptophyte	Puna	Jujuy, Laguna de Pozuelos
		D. curvula Wedd.	Native	Hemicryptophyte	Puna	Jujuy, Salar de Olaroz
		D. deserticola Phil. var. deserticola	Native	Hemicryptophyte	Dry Chaco	Salta, Laguna Blanca
		D. eminens J. Presl var. eminens	Native	Hemicryptophyte	High Andes, Puna	Jujuy, Laguna de Jama
		D. eminens J. Presl & C. Presl var. inclusa Rúgolo	Endemic	Hemicryptophyte	Puna	Jujuy, Laguna de Jama
		D. heterophylla Wedd.	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		D. rigescens (J. Presl) Türpe	Native	Hemicryptophyte	Puna	Jujuy, Quebrada de Salitre
		D. spicigera J. Presl var. cephalotes (Wedd.) Rúgolo & Villav.	Native	Hemicryptophyte	Puna	Jujuy, Quebrada de Salitre
		D. velutina Nees & Meyen var. nardifolia (Griseb.) Rúgolo	Native	Hemicryptophyte	High Andes, Puna	Jujuy, Quebrada de Salitre
		D. velutina Nees & Meyen var. velutina	Native	Hemicryptophyte	Puna	La Rioja, Salina del Leoncito
		D. viridiflavescens (Poir.) Kunth var. montevidensis (Nees) Cabrera & Rúgolo	Native	Hemicryptophyte	Pampa	Buenos Aires, Arroyo Saladillo & NR 205
	Digitaria	D. californica (Benth.) Henrard var. californica	Native	Hemicryptophyte	Dry Chaco, Espinal	Córdoba, Mar Chiquita
		D. californica (Benth.) Henrard var. villosissima Henrard	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, PR 5, Pto. El Saladillo
		D. ciliaris (Retz.) Koeler	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, PR 5, Pto. El Saladillo
		D. eriostachya Mez	Native	Hemicryptophyte	Iberá Marshes	Corrientes, PR 152, 2 km N from Cerrito
		D. sacchariflora (Nees) Henrard	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		D. similis Beetle ex Gould	Native	Hemicryptophyte	Espinal, Iberá Marshes	Santa Fe, Río Salado
	Distichlis	D. acerosa (Griseb.) H.L. Bell & Columbus (Fig. 9.17)	Endemic	Hemicryptophyte	Dry Chaco	La Rioja, Salina La Antigua
		D. australis (Speg.) Villamil	Endemic	Hemicryptophyte	Patagonian Steppe	Río Negro, 36 km S from Chasico
		D. humilis Phil.	Native	Hemicryptophyte	High Andes, Puna	Jujuy, Salinas Grandes
		D. laxiflora Hack.	Endemic	Hemicryptophyte	Pampa	Córdoba, PR 50, Laguna Las Salinas
		D. scoparia (Kunth) Arechav. var. erinacea (Beetle) Nicora	Endemic	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Puerto Deseado
		D. scoparia (Kunth) Arechav. var. scoparia	Native	Hemicryptophyte	Espinal, Monte of Hills and Valleys, Pampa, Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		D. spicata (L.) Greene	Native	Hemicryptophyte	Dry Chaco, Espinal, High Andes, Monte of Hills and Valleys, Pampa, Patagonian Steppe	Chubut, PR 20, 4 km E from Sarmiento
	Eleusine	E. tristachya (Lam.) Lam.	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Quequén Salado
	Elionurus	E. muticus (Spreng.) Kuntze	Native	Hemicryptophyte	Espinal, Humid Chaco	San Luis, Saladillo
	Elymus	E. patagonicus Speg.	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, 43 km from Perito Moreno to Los Antiguos
		E. scabrifolius (Döll) J.H. Hunz.	Native	Hemicryptophyte	Espinal, Paraná Flooded Savanna	Buenos Aires, NP Campos del Tuyú
	Eragrostis	E. bahiensis Schrad. ex Schult.	Native	Hemicryptophyte	Paraná Flooded Savanna	Santa Fe, Río Salado
		E. lugens Nees	Native	Hemicryptophyte	Espinal, Monte of Hills and Valleys	San Luis, Saladillo
		E. mexicana (Hornem.) Link subsp. virescens (J. Presl) S.D. Koch & Sanchéz Vega	Native	Therophyte	Dry Chaco	Catamarca, Salar de Pipanarco
		E. neesii Trin. var. expansiflora Nicora	Native	Hemicryptophyte	Humid Chaco	Santa Fe, Las Gamas
		E. nigricans (Kunth) Steud.	Native	Hemicryptophyte	Puna	Jujuy, Salinas Grandes
		E. orthoclada Hack.	Native	Hemicryptophyte	Paraná Flooded Savanna	Chaco, 13 km N from La Verde, Estancia Dos Tranqueras
	Eriochloa	E. acuminata (J. Presl) Kunth	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		E. montevidensis Griseb.	Native	Hemicryptophyte	Espinal	Córdoba, NR 158, 23 km S from San Francisco
		E. punctata (L.) Desv. ex Ham.	Native	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco	Córdoba, Jeanmaire
		E. tridentata (Trin.) Kuhlm.	Native	Hemicryptophyte	Dry Chaco, Pampa	Santiago del Estero, Lagunas Saladas, road between PR 56 & Los Juríes
	Erioneuron	E. pilosum (Buckley) Nash var. longiaristatum (Kurtz) Anton	Endemic	Hemicryptophyte	Dry Chaco	Santiago del Estero, Salina de Ambargasta
	Festuca	F. argentina (Speg.) Parodi	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, San Julián
		F. argentinensis (St.-Yves) Türpe	Native	Hemicryptophyte	High Andes	Salta, Salar de Arizaro
		F. dissitiflora Steud. ex Griseb.	Native	Hemicryptophyte	Puna	La Rioja, Salina del Leoncito
		F. humilior Nees & Meyen	Native	Hemicryptophyte	Puna	Jujuy, Laguna de los Pozuelos
		F. orthophylla Pilg.	Native	Hemicryptophyte	Puna	Jujuy, Laguna de Guayatayoc
		F. parodii St.-Yves	Endemic	Hemicryptophyte	Puna	La Rioja, Salinas del Leoncito
	Gouinia	G. latifolia (Griseb.) Vasey	Native	Hemicryptophyte	Espinal	Córdoba, Mar Chiquita
		G. paraguayensis (Kuntze) Parodi var. tortuosa (Swallen) Türpe	Native	Hemicryptophyte	Dry Chaco	La Rioja, E edge of Salina La Antigua
	Hordeum	H. comosum J. Presl	Native	Hemicryptophyte	Patagonian Steppe	Tierra del Fuego, Estancia Cullen, near N edge of Bahía San Sebastián
		H. cordobense Bothmer, Jacobsen & Nicora	Endemic	Hemicryptophyte	Dry Chaco, Pampa	Tucumán, Chañar Pozo
		H. erectifolium Bothmer, Jacobsen & M. Jørg.	Endemic	Hemicryptophyte	Espinal	Buenos Aires, Salinas Chicas
		H. euclaston Steud.	Native	Therophyte	Espinal, Monte of Plains and Plateaus	Corrientes, Estancia La Encarnación
		H. flexuosum Nees ex Steud.	Native	Hemicryptophyte	Pampa	Buenos Aires, Cascallares, Río Quequén Salado
		H. lechleri (Steud.) Schenck	Native	Hemicryptophyte	Patagonian Steppe	Tierra del Fuego, Bahía de San Sebastián
		H. muticum J. Presl	Native	Hemicryptophyte	Puna	Jujuy, Quebrada de Salitre
		H. procerum Nevski	Endemic	Hemicryptophyte	Pampa	Buenos Aires, Tres Arroyos, Río Quequén Salado
		H. pubiflorum Hook. f. subsp. halophilum (Griseb.) Baden & Bothmer	Native	Hemicryptophyte	Puna	Catamarca, Laguna blanca
		H. pubiflorum Hook. f. subsp. pubiflorum	Native	Hemicryptophyte	Patagonian Steppe, Puna	Santa Cruz, Estancia Tapi Aike
		H. stenostachys Godr.	Native	Hemicryptophyte	Espinal, Pampa	Buenos Aires, Bahía Blanca Estuary
	Hymenachne	H. amplexicaulis (Rudge) Nees	Native	Hemicryptophyte	Paraná Flooded Savanna	Buenos Aires, Río Salado
	Jarava	J. ichu Ruiz & Pav. var. ichu	Native	Hemicryptophyte	Espinal	La Pampa, Laguna Guatraché
		J. neaei (Nees ex Steud.) Peñailillo	Native	Hemicryptophyte	Puna	San Juan, Río de Sal
		J. plumosa (Spreng.) S.W.L. Jacobs & J. Everett	Native	Hemicryptophyte	Espinal	Buenos Aires, Salitral de la Vidriera
	Leptochloa	L. dubia (Kunth) Nees	Native	Hemicryptophyte	Dry Chaco	Santiago del Estero, Salinas Grandes
		L. fusca (L.) Kunth subsp. fascicularis (Lam.) N.W. Snow	Native	Hemicryptophyte	Dry Chaco, Pampa	Córdoba, Salinas Grandes
		L. fusca (L.) Kunth subsp. uninervia (J. Presl) N. Snow	Native	Hemicryptophyte	Dry Chaco, Espinal, Pampa, Puna	Córdoba, Salinas Grandes
	Melica	M. argyrea Hack.	Native	Hemicryptophyte	Pampa	Santa Fe, Arteaga
		M. glabrescens (Torres) Torres	Endemic	Hemicryptophyte	Pampa	Buenos Aires, Cascallares, Río Quequén Salado
		M. macra Nees	Native	Hemicryptophyte	Dry Chaco, Pampa	Tucumán, Salitral Pobre
		M. rigida Cav.	Native	Hemicryptophyte	Pampa	Buenos Aires, Río Salado
	Muhlenbergia	M. asperifolia (Nees & Meyen ex Trin.) Parodi	Native	Hemicryptophyte	Espinal, High Andes, Monte of Hills and Valleys, Patagonian Steppe	Catamarca, Carachi Pampa
	Munroa	M. andina Phil.	Native	Therophyte	Puna	Jujuy, Salinas Grandes
	Nassella	N. arcuata (R.E. Fr.) Torres	Native	Hemicryptophyte	Puna	Jujuy, Salinas Grandes
		N. formicarum (Delile) Barkworth	Native	Hemicryptophyte	Pampa	Buenos Aires, Cascallares, Río Quequén Salado
		N. nardoides (Phil.) Barkworth	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
		N. tenuis (Phil.) Barkworth	Native	Hemicryptophyte	Espinal, Monte of Plains and Plateaus, Patagonian Steppe	Mendoza, Salinas del Diamante
	Nicoraepoa	N. pugionifolia (Speg.) Soreng & L.J. Gillespie	Native	Hemicryptophyte	Patagonian Steppe	Patagonia Occidental
	Panicum	P. chloroleucum Griseb.	Endemic	Hemicryptophyte	Puna	Catamarca, Laguna Blanca
		P. urvilleanum Kunth	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	La Rioja, Salina de Mascasín
	Pappophorum	P. caespitosum R.E. Fr.	Native	Hemicryptophyte	Dry Chaco, Espinal, Pampa	Buenos Aires, Salitral de la Vidriera
		P. pappiferum (Lam.) Kuntze	Native	Hemicryptophyte	Dry Chaco, Paraná Flooded Savanna	Tucumán, Chañar Pozo
		P. phillippianum Parodi	Native	Hemicryptophyte	Dry Chaco, Espinal, Monte of Plains and Plateaus, Pampa	Mendoza, Salinas del Diamante
		P. vaginatum Buckley	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
	Pappostipa	P. chrysophylla (E. Desv.) Romaschenko var. chrysophylla	Native	Hemicryptophyte	Patagonian Steppe	Mendoza, Laguna de Llancanelo
		P. humilis (Cav.) Romaschenko var. humilis	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Puerto Deseado
	Paspalum	P. almum Chase	Native	Hemicryptophyte	Humid Chaco	Chaco, NR 11, Río Salado
		P. buckleyanum Vasey	Native	Hemicryptophyte	Dry Chaco	Salta, NR 16, km 669, El Galpón
		P. denticulatum Trin.	Native	Hemicryptophyte	Dry Chaco	Salta, NR 16, between km 669 & 675, El Galpón.
		P. distichum L.	Native	Hemicryptophyte	Dry Chaco, Espinal	Tucumán, NR 9, Río India Muerta
		P. malacophyllum Trin.	Native	Hemicryptophyte	Dry Chaco	Tucumán, NR 9, 3 km from the boundary with Santiago del Estero
		P. vaginatum Sw.	Native	Hemicryptophyte	Espinal, Pampa	Buenos Aires, Pehuajó
	Phragmites	P. australis (Cav.) Trin. ex Steud.	Native	Hemicryptophyte	Espinal	Buenos Aires, Salina Chica
	Poa	P. atropidiformis Hack. var. atropidiformis	Native	Hemicryptophyte	Patagonian Steppe	Tierra del Fuego, Estancia Cullen, near N edge of Bahía San Sebastian
		P. lanigera Nees	Native	Hemicryptophyte	Pampa	Santa Fe, between Los Nogales & Río Carcarañá
		P. lanuginosa Poir. var. patagonica (Phil.) Giussani & Soreng	Native	Hemicryptophyte	Patagonian Steppe	Chubut, Salina Grande, Península Valdés
		P. ligularis Nees ex Steud. var. resinulosa (Nees ex Steud.) Fernández Pepi & Giussani	Endemic	Hemicryptophyte	Pampa	Córdoba, Pacheco de Melo
	Polypogon	P. interruptus Kunth	Native	Hemicryptophyte	High Andes	Catamarca, Andes, E of Paso De San Francisco
	Puccinellia	P. argentinensis (Hack.) Parodi	Native	Hemicryptophyte	High Andes, Puna	La Rioja, Laguna Brava
		P. frigida (Phil.) I.M. Johnst.	Native	Hemicryptophyte	High Andes, Puna	Jujuy, Cerro Sal
		P. glaucescens (Phil.) Parodi	Native	Hemicryptophyte	Pampa	La Pampa, Gral. Pico
		P. magellanica (Hook. f.) Parodi	Native	Hemicryptophyte	Patagonian Steppe	Tierra del Fuego, Río Grande Department
		P. mendozina (Hack.) Parodi	Endemic	Hemicryptophyte	Patagonian Steppe	Santa Cruz, Estancia Tapi Aike
		P. pusilla (Hack.) Parodi	Native	Hemicryptophyte	Patagonian Steppe	Santa Cruz, PR 12, between Cañadón Seco & Caleta Olivia
	Schizachyrium	S. microstachyum (Desv. ex Ham.) Roseng., B.R. Arrill. & Izag.	Native	Hemicryptophyte	Dry Chaco, Humid Chaco	Santiago del Estero, J.F.Ibarra, Lagunas Saladas, road between PR 56 & Los Juríes
	Setaria	S. geminata (Forssk.) Veldkamp	Native	Hemicryptophyte	Pampa	Buenos Aires, Depresión del Salado
		S. hunzikeri Anton	Native	Hemicryptophyte	Dry Chaco	La Rioja, NR 79, between Chamical & Casa de Piedra
		S. lachnea (Nees) Kunth	Native	Hemicryptophyte	Dry Chaco, Espinal	Córdoba, Jeanmaire
		S. leucopila (Scribn. & Merr.) K. Schum.	Native	Hemicryptophyte	Dry Chaco	La Rioja, Salina la Antigua
		S. macrostachya Kunth	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		S. pampeana Parodi ex Nicora	Native	Hemicryptophyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	La Pampa, Salitral Negro
		S. parviflora (Poir.) Kerguélen var. parviflora	Native	Hemicryptophyte	Dry Chaco, Humid Chaco, Iberá Marshes, Pampa	Santa Fe, Tostado, Río Salado
	Spartina	S. densiflora Brongn.	Native	Hemicryptophyte	Espinal, Humid Chaco, Pampa, Paraná Flooded Savanna	Córdoba, Mar Chiquita
		S. fasciculata (Lam.) P. Beauv.	Native	Hemicryptophyte	Espinal, Paraná Flooded Savanna	Buenos Aires, Bahía de Samborombón
		S. spartinae (Trin.) Merr. ex Hitchc.	Native	Hemicryptophyte	Humid Chaco, Pampa, Paraná Flooded Savanna	Chaco, Río Salado
	Sporobolus	S. indicus (L.) R. Br. var. indicus	Native	Hemicryptophyte	Dry Chaco, Iberá Marshes, Pampa	Corrientes, Rincón de Luna, Estancia Los Tres Rincones, Alto Cué
		S. maximus Hauman	Endemic	Hemicryptophyte	Monte of Hills and Valleys	Tucumán, Rio Santa Maria
		S. mendocinus E. Méndez	Endemic	Hemicryptophyte	Monte of Plains and Plateaus	Mendoza, Arroyo Blanco
		S. monandrus Roseng., B.R. Arrill. & Izag.	Native	Hemicryptophyte	Espinal	Entre Ríos, Paso Yunque, on tha Guayquiraró
		S. phleoides Hack.	Endemic	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco, Pampa, Monte of Plains and Plateaus	La Pampa, Salitral de La Perra
		S. pyramidatus (Lam.) Hitchc.	Native	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco, Pampa	San Juan, Salina de Mascasín
		S. rigens (Trin.) E. Desv. var. atacamensis (Parodi) Asteg.	Endemic	Hemicryptophyte	Puna	Jujuy, Salinas Grandes
		S. rigens (Trin.) E. Desv. var. rigens	Native	Hemicryptophyte	Espinal, Monte of Plains and Plateaus, Patagonian Steppe	Chubut, Salina Chica, Península Valdés
	Steinchisma	S. hians (Elliott) Nash	Native	Hemicryptophyte	Espinal	Santa Fe, between San Cristóbal & Crespo, Estancia La Fortuna
	Stenotaphrum	S. secundatum (Walter) Kuntze	Native	Hemicryptophyte	Pampa	Buenos Aires, Arroyo San Clemente
	Trichloris	T. crinita (Lag.) Parodi	Native	Hemicryptophyte	Dry Chaco, High Andes	Catamarca, Salinas Grandes
	Urochloa	U. adspersa (Trin.) R.D. Webster	Native	Hemicryptophyte	Dry Chaco	Tucumán, Monteagudo
		U. paucispicata (Morong) Morrone & Zuloaga	Native	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
Portulacaceae	Calandrinia	C. compacta Barnéoud	Native	Hemicryptophyte	High Andes	La Rioja, Reserva Laguna Brava, Río Salado
	Portulaca	P. confertifolia Hauman var. cordobensis D. Legrand	Endemic	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
		P. echinosperma Hauman	Endemic	Therophyte	Dry Chaco	San Juan, Salina de Mascasín
		P. grandiflora Hook.	Native	Therophyte	Dry Chaco	San Juan, Salina de Mascasín
		P. obtusifolia D. Legrand var. obtusifolia	Endemic	Hemicryptophyte	Dry Chaco	Córdoba, Saladillo, Villa Candelaria
		P. ragonesei D. Legrand	Endemic	Hemicryptophyte	Dry Chaco	Córdoba, Salinas Grandes
	Talinum	T. polygaloides Gillies ex Arn.	Native	Geophyte	Dry Chaco	Córdoba, Salinas Grandes
Potamogetonaceae	Stuckenia	S. filiformis (Pers.) Boehm. ssp. alpina (Blytt) R.R. Haynes, Les & M. Král	Native	Geophyte	High Andes	San Juan, Quebrada Mula Tuerta
		S. striata (Ruiz & Pav.) Holub	Native	Geophyte	Pampa	Buenos Aires, Río Quequén Salado
Ranunculaceae	Halerpestes	H. cymbalaria (Pursh) Greene	Native	Geophyte	Monte of Hills and Valleys, Pampa	Catamarca, from NR 40 to Famabalasto
		H. exilis (Phil.) Tamura	Native	Geophyte	High Andes, Puna	La Rioja, Laguna Brava
Rhamnaceae	Discaria	D. chacaye (G. Don.) Tortosa	Native	Phanerophyte	Patagonian Steppe	Tierra del Fuego, Bahía San Sebastián
	Ziziphus	Z. mistol Griseb.	Native	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
Ruppiaceae	Ruppia	R. cirrhosa (Petagna) Grande	Native	Geophyte	Dry Chaco, Espinal	Córdoba, Salinas Grandes
Sapindaceae	Urvillea	U. chacoënsis Hunz.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
Scrophulariaceae	Bacopa	B. monnieri (L.) Pennell	Native	Therophyte	Humid Chaco, Monte of Plains and Plateaus	Mendoza, Ciénagas de Resolana
	Limosella	L. australis R. Br.	Native	Therophyte	Patagonian Steppe	Santa Cruz, Estancia Tapi Aike
	Monttea	M. aphylla (Miers) Benth. & Hook. var. aphylla	Endemic	Chamaephyte	Monte of Plains and Plateaus	La Pampa, Laguna Curru Lauquen
	Scoparia	S. dulcis L.	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		S. montevidensis (Spreng.) R.E. Fr.	Native	Hemicryptophyte	Pampa	Córdoba, La Nacional
Simaroubaceae	Castela	C. coccinea Griseb.	Native	Phanerophyte	Dry Chaco	Códoba, Mar Chiquita
Solanaceae	Bouchetia	B. anomala (Miers) Britton & Rusby	Native	Hemicryptophyte	Dry Chaco, Espinal	Córdoba, Mar Chiquita
	Calibrachoa	C. humilis (R.E. Fr.) Stehmann & Semir	Native	Chamaephyte	Espinal	Corrientes, road from Mercedes to Paso de los Libres & Río Miriñay
		C. parviflora (Juss.) D’Arcy	Native	Hemicryptophyte	Espinal, Humid Chaco, Pampa	Corrientes, Monte Caseros
	Fabiana	F. denudata Miers	Native	Phanerophyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		F. densa J. Remy	Native	Chamaephyte	Puna	Jujuy, Quebrada de Salitra
		F. patagonica Speg.	Native	Phanerophyte	Patagonian Steppe	Santa Cruz, Lago Salitroso
	Jaborosa	J. bergii Hieron.	Endemic	Hemicryptophyte	Espinal	Buenos Aires, Salina Chica
	Leptoglossis	L. linifolia (Miers) Griseb.	Endemic	Hemicryptophyte	Dry Chaco, Espinal, Humid Chaco, Pampa	Córdoba, Mar Chiquita
	Lycium	L. americanum Jacq.	Native	Chamaephyte	Dry Chaco, Espinal, Iberá Marshes	Formosa, Laguna La Salada
		L. boerhaviifolium L. f.	Native	Chamaephyte	Dry Chaco, Espinal, Iberá Marshes, Pampa	Córdoba, Mar Chiquita
		L. chanar Phil.	Native	Chamaephyte	High Andes	Catamarca, around Antofagasta de la Sierra
		L. chilense Miers ex Bertero var. chilense	Native	Chamaephyte	Dry Chaco, Espinal	Buenos Aires, Salitral de la Vidriera
		L. chilense Miers ex Bertero var. confertifolium (Miers) F.A. Barkley	Native	Chamaephyte	Monte of Plains and Plateaus	La Pampa, Salar Levalle
		L. chilense Miers ex Bertero var. filifolium (Miers) Bernardello	Native	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	Córdoba, Mar Chiquita
		L. chilense Miers ex Bertero var. minutifolium (Miers) F.A. Barkley	Native	Chamaephyte	Dry Chaco, Monte of Plains and Plateaus, Patagonian Steppe	La Pampa, Salar Levalle
		L. ciliatum Schltdl.	Native	Chamaephyte	Dry Chaco, Espinal	Córdoba, Salinas Grandes
		L. elongatum Miers	Endemic	Chamaephyte	Dry Chaco	Tucumán, Cajón del Río Luro
		L. humile Phil.	Native	Chamaephyte	High Andes, Puna	Catamarca, Salina de Antofalla
		L. infaustum Miers	Endemic	Chamaephyte	Dry Chaco, Espinal, Humid Chaco, Pampa	Córdoba, between R. D. de Guzmán & Pacheco de Melo
		L. morongii Britton	Native	Chamaephyte	Iberá Marshes, Paraná Flooded Savanna	Chaco, Colonia Benitez
		L. nodosum Miers	Native	Chamaephyte	Dry Chaco	Tucumán, Chañar Pozo
		L. repens Speg.	Endemic	Chamaephyte	Patagonian Steppe	Santa Cruz, Río Gallegos
		L. tenuispinosum Miers var. calycinum (Griseb.) Bernardello	Native	Chamaephyte	Dry Chaco	Tucumán, Tapia, Quebrada de Lules
		L. tenuispinosum Miers var. friesii (Dammer) C.L. Hitchc.	Endemic	Chamaephyte	Dry Chaco	Santiago del Estero, Quimili Paso
		L. tenuispinosum Miers var. tenuispinosum	Native	Chamaephyte	Dry Chaco, Espinal, Monte of Plains and Plateaus	La Pampa, Laguna Colorada Grande
		L. vimineum Miers	Native	Chamaephyte	Espinal	Santa Fe, between Esperanza & Santa Fe, Río Salado
	Nicotiana	N. corymbosa J. Remy var. corymbosa	Native	Therophyte	Puna	San Juan, Reserva de San Guillermo, Río de la Sal
		N. longiflora Cav.	Native	Hemicryptophyte	Espinal, Puna	Córdoba, Mar Chiquita
		N. paa Mart. Crov.	Native	Hemicryptophyte	Dry Chaco	Catamarca, Pipanaco
	Petunia	P. axillaris (Lam.) Britton, Stern & Poggenb. subsp. axillaris	Native	Therophyte	Espinal	Córdoba, Mar Chiquita
		P. inflata R.E. Fr.	Native	Therophyte	Humid Chaco	Formosa, Río Salado
	Physalis	P. viscosa L.	Native	Hemicryptophyte	Espinal, Pampa	Córdoba, Mar Chiquita
	Sclerophylax	S. arnottii Miers	Endemic	Hemicryptophyte	Dry Chaco	San Juan, Salina de Mascasín
		S. difulvioi Del Vitto & Petenatti	Endemic	Hemicryptophyte	Monte of Hills and Valleys	San Luis, Sierra de Las Quijadas
		S. lorentzianus O. Hoffm.	Native	Hemicryptophyte	Mesopotamian Savanna	Corrientes, NR 127 & Arroyo Ayui
		S. spinescens Miers	Native	Therophyte	Espinal, Paraná Flooded Savanna	Córdoba, Mar Chiquita
		S. trispermum Di Fulvio	Endemic	Therophyte	Dry Chaco	Formosa, Las Lomitas
	Solanum	S. atropurpureum Schrank	Native	Hemicryptophyte	Humid Chaco	Formosa, NR 11, km 1144, Arroyo Salado
		S. brevicaule Bitter	Native	Hemicryptophyte	Monte of Hills and Valleys	Salta, Río Salado
		S. elaeagnifolium Cav.	Native	Hemicryptophyte	Dry Chaco, Monte of Plains and Plateaus	San Luis, Salina del Bebedero
		S. euacanthum Phil.	Native	Hemicryptophyte	Dry Chaco,Monte of Plains and Plateaus, Patagonian Steppe	Córdoba, Salinas Grandes
		S. hieronymi Kuntze	Native	Hemicryptophyte	Monte of Plains and Plateaus	San Luis, Salina del Bebedero
		S. juvenale Thell.	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		S. pilcomayense Morong	Native	Hemicryptophyte	Dry Chaco	Tucumán, Chañar Pozo
		S. triflorum Nutt.	Native	Therophyte	Pampa	Buenos Aires, Estancia Salalé
Sterculiaceae	Ayenia	A. odonellii Cristóbal	Native	Chamaephyte	Iberá Marshes	Corrientes, NR 12, 10 km S from NR 123
	Melochia	M. anomala Griseb.	Native	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
		M. hermannioides St.Hil	Native	Chamaephyte	Iberá Marshes	Corrientes, NR 12, 10 km S from NR 123
Typhaceae	Typha	T. domingensis Pers.	Native	Geophyte	Dry Chaco	San Juan, Baño El Salado
Valerianaceae	Valeriana	V. castellanosii Borsini	Native	Hemicryptophyte	High Andes	Jujuy, Laguna de Vilama
Verbenaceae	Aloysia	A. gratissima (Gillies & Hook. ex Hook.) Tronc. var. gratissima	Native	Phanerophyte	Dry Chaco, Espinal, Iberá Marshes	Entre Ríos, Paso Yunque, Río Guayquiraró
	Glandularia	G. flava (Gillies & Hook. ex Hook.) Schnack & Covas	Endemic	Hemicryptophyte	Espinal, Monte of Plains and Plateaus	Río Negro, Cipolletti
		G. lilloana (Moldenke) Botta	Endemic	Hemicryptophyte	Monte of Hills and Valleys	Catamarca, El Saladillo
		G. microphylla (Kunth) Cabrera	Native	Hemicryptophyte	Puna	Jujuy, Quebrada del Salitre
		G. nana (Moldenke) Tronc.	Native	Therophyte	Humid Chaco	Chaco, Margarita Belín
		G. tenera (Spreng.) Cabrera	Native	Hemicryptophyte	Espinal, Pampa	Buenos Aires, Lago Epecuén
		G. tweedieana (Niven ex Hook.) P. Peralta	Native	Hemicryptophyte	Iberá Marshes	Corrientes, 19.5 km SE from San Luis del Palmar
		G. venturii (Moldenke) Botta	Endemic	Hemicryptophyte	Espinal, Puna	San Luis, Saladillo
	Junellia	J. bisulcata (Hayek) Moldenke var. bisulcata	Native	Chamaephyte	Puna	Jujuy, El Moreno to Abra de Lipan
		J. connatibracteata (Kuntze) Moldenke	Endemic	Chamaephyte	Monte of Plains and Plateaus, Patagonian Steppe	Chubut, Salina del Pito
		J. hookeriana (Covas & Schnack) N. O’Leary & P. Peralta var. hookeriana	Endemic	Chamaephyte	Espinal, Monte of Plains and Plateaus	Buenos Aires, Laguna La Salada
		J. micrantha (Phil.) Múlgura	Native	Chamaephyte	Patagonian Steppe	Santa Cruz, 5–7 km from San Julián
		J. patagonica (Speg.) Moldenke	Endemic	Chamaephyte	Patagonian Steppe	Chubut, Estancia La Begonia
		J. seriphioides (Gillies & Hook. ex Hook.) Moldenke	Native	Chamaephyte	Monte of Plains and Plateaus, Puna	Jujuy, Salinas Grandes
		J. thymifolia (Lag.) Moldenke	Native	Chamaephyte	Patagonian Steppe	Chubut, NR 25, 42 km S from Paso de Indios
	Lippia	L. grata Schauer	Native	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
		L. salsa Griseb.	Endemic	Phanerophyte	Dry Chaco, Espinal, Monte of Plains and Plateaus, Pampa	La Pampa, Salitral de La Perra
	Neosparton	N. aphyllum (Gillies & Hook. ex Hook.) Kuntze	Endemic	Chamaephyte	Monte of Plains and Plateaus	Mendoza, Salinas del Diamante
		N. patagonicum Tronc.	Endemic	Chamaephyte	Patagonian Steppe	Chubut, Colonia Sarmiento
	Parodianthus	P. ilicifolius (Moldenke) Tronc.	Endemic	Chamaephyte	Dry Chaco	Córdoba, Salinas Grandes
	Phyla	P. nodiflora (L.) Greene var. minor (Hook.) N. O’Leary & Múlgura	Native	Hemicryptophyte	Espinal, Iberá Marshes, Pampa	Corrientes, PR 152, 2 km N from Cerrito
	Pitraea	P. cuneato-ovata (Cav.) Caro	Native	Geophyte	Dry Chaco	Tucumán, Chañar Pozo, Río Saladillo
	Stachytarpheta	S. cayennensis (Rich.) Vahl	Native	Chamaephyte	Humid Chaco	Formosa, Río Salado
	Verbena	V. bonariensis L. var. bonariensis	Native	Therophyte	Espinal	Santa Fe, Campo Buriasco, near María Juana
		V. gracilescens (Cham.) Herter var. gracilescens	Native	Hemicryptophyte	Espinal, Mesopotamian Savanna	Córdoba, Río Cuarto or Saladillo
		V. litoralis Kunth var. subglabrata (Moldenke) N. O’Leary & Múlgura	Native	Hemicryptophyte	Humid Chaco	Santa Fe, Arroyo Golondrina & road to Fortín Olmos
Viscaceae	Phoradendron	P. argentinum Urb.	Native	Parasitic	Monte of Hills and Valleys	Salta, Los Castillos
Vitaceae	Cissus	C. verticillata (L.) Nicolson & C.E. Jarvis	Native	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
Ximeniaceae	Ximenia	X. americana L. var. americana	Native	Phanerophyte	Dry Chaco	Córdoba, Salinas Grandes
Zannichelliaceae	Zanichelia	Z. palustris L.	Native	Geophyte	Pampa, Paraná Flooded Savanna	Buenos Aires, Oriente, Río Quequén Salado
Zygophyllaceae	Bulnesia	B. bonariensis Griseb.	Native	Phanerophyte	Dry Chaco	Formosa, El Descanso
		B. foliosa Griseb.	Native	Phanerophyte	Dry Chaco	La Rioja, E edge of Salina La Antigua
		B. retama (Gillies ex Hook. & Arn.) Griseb.	Native	Phanerophyte	Dry Chaco, Monte of Plains and Plateaus	La Rioja, Salina de Mascasín
	Larrea	L. ameghinoi Speg.	Endemic	Phanerophyte	Patagonian Steppe	Río Negro, NR 23, 52 km SW from Los Menucos in direction to Ing. Jacobacci
		L. cuneifolia Cav.	Endemic	Phanerophyte	Dry Chaco, Monte of Plains and Plateaus	Catamarca, Salar de Pipanaco
		L. divaricata Cav.	Native	Phanerophyte	Dry Chaco	Catamarca, Salinas Grandes
	Plectrocarpa	P. tetracantha Gillies ex Hook. & Arn	Endemic	Phanerophyte	Dry Chaco, Monte of Plains and Plateaus	Catamarca, Salinas Grandes
	Porlieria	P. microphylla (Baill.) Descole, O’Donell & Lourteig	Native	Phanerophyte	Dry Chaco, Monte of Plains and Plateaus	Mendoza, Salinas de Guasayán

Fig. 9.6

Tephrocactus aoracanthus. (a) Plant. (b) Spine, cross section. (c) Flower, longitudinal section. (d) Flower, general view. (e) Stigma. (f, g) Seed, lateral view and cross section, respectively

Fig. 9.7

Grahamia bracteata. (a) Flowering branch. (b) Sepal. (c) Flower, longitudinal section. (d) Stamen, dorsal view. (e) Ovary, cross section. (f) Fruit. (g) Seed. (h) Seed, cross section. (i) Embryo

Fig. 9.8

Maytenus vitis-idaea. (a) Fruiting branch. (b) Male flower. (c) Female flower. (d) Basal view of female flower in longitudinal section

Fig. 9.9

Cressa nudicaulis. (a) Branch. (b) Opened corolla. (c) Gynoecium. (d) Branch with fruit. (e) Fruit, cross section. (f) Seed. (g) Embryo

Fig. 9.10

Halosicyos ragonesei. (a) Fruiting branch. (b, c) Male flowers. (d, e) Anthers, ventral and dorsal view, respectively. (f) Female flower. (g) Female flower, cross section. (g) Fruit. (i) Fruit, cross section. (j, k) Seed, longitudinal and lateral view, respectively. (l) Embryo

Fig. 9.11

Mimozyganthus carinatus. (a, b) Branches. (c) Inflorescence. (d) Flower bud and bract. (e) Flower. (f, g) Stamens, dorsal and ventral view, respectively. (h) Gynoecium. (i) Ovary, cross section. (j) Fruit. (k) Fruit, longitudinal section. (l) Seed. (m) Embryo

Fig. 9.12

Prosopis reptans var. reptans. (a) Fruiting branch. (b) Node with spines. (c) Leaf. (d) Inflorescence. (e) Flower. (f) Stamens, dorsal and ventral view. (g) Gynoecium. (h) Fruit. (i) Seed

Fig. 9.13

Senna acanthoclada. (a) Plant. (b) Branch. (c) Flower. (d, e) Fertile basal stamens. (f, g) Fertile medium stamens. (h) Staminode. (i) Gynoecium. (j) Fruit

Fig. 9.14

Distichlis acerosa. (a) Habit. (b) Ligule. (c) Profiles. (d, e) Staminate spikelets. (f) Female spikelet. (g) Pistillate flower. (h) Staminode. (i–k) Fruit, scutelar, hilar and cross sections respectively

Fig. 9.15

Grahamia bracteata. (a) Flowering branch. (b) Sepal. (c) Flower, longitudinal section. (d) Stamen, dorsal view. (e) Ovary, cross section. (f) Fruit. (g) Seed. (h) Seed, cross section. (i) Embryo

Fig. 9.16

Lycium infaustum. (a) Flowering branch. (b) flower. (c) Corolla sector. (d) Anther. (e) Gynoecium. (f) Fruit. (g) Calyx. (h) Seed. (i) Seed, cross section. (j) Embryo

Fig. 9.17

Plectrocarpa tetracantha. (a) Flowering plant. (b) Flower bud, cross section. (c) Flower. (d) Androecium. (e, g) Stamens. (h) Gynoecium, showing nectaries and hairs on the ovary. (i) Fruit. (j) Fruit, longitudinal section. (k) Fruit, cross section. (l) Seed. (m) Embryo