Tripsacum australe Cutler & E.S.Anderson

Bernal, R., G. Galeano, A. Rodríguez, H. Sarmiento y M. Gutiérrez. 2017. Nombres Comunes de las Plantas de Colombia. http://www.biovirtual.unal.edu.co/nombrescomunes/

Vernacular

arroz silvestre, cañarote, gramalote

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation

Predicted extinction risk: not threatened. Confidence: confident

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution

Nativa en Colombia; Alt. 0 - 1500 m.; Andes, Guayana y Serranía de La Macarena, Orinoquia, Valle del Magdalena.

Morphology General Habit

Hierba

Conservation

No Evaluada

The Useful Plants of Boyacá project

Ecology

Alt. 0 - 1500 m.

Morphology General Habit

Herb.

Distribution

Native from Colombia.

Conservation

Not Evaluated.

Distribution

Biogeografic region: Andean, Guiana Shield, Orinoquia. Elevation range: 0–1500 m a.s.l. Native to Colombia. Colombian departments: Boyacá, Cundinamarca, Guaviare, Huila, Meta, Tolima.

Habit

Herb.

Conservation

IUCN Red List Assessment (2021): LC.

Ecology

Habitat according IUCN Habitats Classification: forest and woodland, artificial - terrestrial.

Morphology General Habit

Perennial; caespitose. Culms erect, or geniculately ascending; robust; 200-350 cm long; 10-15 mm diam. Culm-internodes distally glabrous. Culm-nodes purple. Leaves basal and cauline. Leaf-sheaths keeled; woolly. Ligule a ciliolate membrane; 0.4-0.6 mm long. Leaf-blade base with a false petiole. Leaf-blades lanceolate; 30-140 cm long; 18-40 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

Morphology Reproductive morphology Inflorescences

Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; terminal and axillary. Racemes 1-4; single, or paired, or digitate; erect; smoothly terete; unilateral; 17-22 cm long. Rhachis female portion 5.5-7.5cm long, fragile at the nodes; subcylindrical and excavated; 3.4-5 mm wide; glabrous on surface. Spikelet packing abaxial. Rhachis internodes oblong; adherent to upper glume of sessile spikelet. Rhachis internode tip transverse; crateriform. Sexes segregated; on bisexual branches; with male above. Spikelets sunken; solitary. Fertile spikelets sessile. Male spikelets sessile, or sessile and pedicelled; 2 in a cluster. Pedicels (male) 0-0.7 mm long.

Morphology Reproductive morphology Inflorescences Spikelets

Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 5.5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely. Male spikelets distinct from female; with free pedicels; all deciduous together; lanceolate, or elliptic; 7-8.5 mm long; hairy; obtuse, or acute. Male spikelet glumes 2; coriaceous; muticous. Male spikelet lemma 6-8 mm long; 5 -veined.

Fertile

Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 5.5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.

Morphology Reproductive morphology Inflorescences Bracts Glume

Glumes dissimilar; reaching apex of florets; firmer than fertile lemma. Lower glume ovate; 1 length of spikelet; indurate; without keels. Lower glume apex acuminate. Upper glume ovate; cartilaginous; without keels. Upper glume apex acute.

Morphology Reproductive morphology Flowers Florets

Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline. Fertile florets female. Fertile lemma oblong; hyaline; without keel. Palea hyaline.

Morphology Reproductive morphology Flowers

Anthers 3; 3.2-3.5 mm long. Styles connate below.

sex Male

Male spikelets distinct from female; with free pedicels; all deciduous together; lanceolate, or elliptic; 7-8.5 mm long; hairy; obtuse, or acute. Male spikelet glumes 2; coriaceous; muticous. Male spikelet lemma 6-8 mm long; 5 -veined.

Distribution

North America: Mexico. South America: Caribbean, northern South America, western South America, Brazil, and southern South America.

Reference

Andropogoneae. Fl Guiana 1997.

Use Gene Sources

Used as gene sources.