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ANATOMY OF ECHINODORUS (ALISMATACEAE) SCAPES FROM NORTHEASTERN BRAZIL AS APPLIED TO TAXONOMY

Published online by Cambridge University Press:  01 March 2008

L. Q. Matias ,
A. Soares  and
V. L. Scatena
L. Q. Matias*
Affiliation:
Universidade Federal do Ceará, Departamento de Biologia, Campus do PiCi, Bloco 906, 60451-760, Fortaleza, CE, Brazil.
A. Soares
Affiliation:
Universidade Federal do Ceará, Departamento de Biologia, Campus do PiCi, Bloco 906, 60451-760, Fortaleza, CE, Brazil.
V. L. Scatena
Affiliation:
Departamento de Botânica, Instituto de Biociências, UNESP, C. Postal 199, 13506-900, Rio Claro, SP, Brazil. Bolsista CNPq.
*
*E-mail for correspondence: lqmatias@ufc.br
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Abstract

The anatomical characters of the scape of Echinodorus glandulosus, E. lanceolatus, E. palaefolius, E. paniculatus, E. pubescens and E. subalatus subsp. subalatus (Alismataceae) were examined. These six sympatric species occur in northeastern Brazil and demonstrate great morphological similarity. The aim of the present study was to identify anatomical characters of taxonomic importance. Scapes possess a uniseriate epidermis composed of thin-walled tabular cells. The scapes of most species have differentiated epidermis, cortex, and vascular cylinders. There are several layers of regular chlorenchyma cells immediately below the epidermis, intercalated with collateral vascular bundles, in all species. There are also laticiferous ducts throughout the scape, and aerenchyma in both the cortex and pith. The shape and outline of scapes, the presence and position of winged extensions, the absence of differentiated vascular cylinders or cortex, and the number of vascular bundles are important characters for differentiating species in Echinodorus. An identification key employing the features analysed is provided.

Keywords

Alismataceaeaquatic plantsEchinodorusscape anatomy
Type
Articles
Information
Edinburgh Journal of Botany , Volume 65 , Issue 1 , March 2008 , pp. 11 - 21
Copyright
Copyright © Trustees of the Royal Botanic Garden Edinburgh 2008

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References

Dahlgren, R. M. T. & Rasmussen, F. N. (1983). Monocotyledon evolution: characters and phylogenetic estimation. Evol. Biol. 16: 255–395.CrossRefGoogle Scholar
Dahlgren, R. M. T., Clifford, H. T. & Yeo, P. F. (1985). The Families of the Monocotyledons. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Fahn, A. (1990). Plant Anatomy, 4th edition. Oxford/London: Pergamon Press.Google Scholar
Fasset, N. C. (1955). Echinodorus in the American tropics. Rhodora 57: 133–156, 174–188, 202–212.Google Scholar
Feder, N. & O'Brien, T. P. (1968). Plant microtechnique: some principles and methods. Amer. J. Bot. 55: 123–142.CrossRefGoogle Scholar
Guimarães, E. S. (1999). Alismataceae da região sul do Pantanal Mato-Grossense. MSc thesis (unpublished), Universidade de São Paulo, Brazil.Google Scholar
Haynes, R. R. & Holm-Nielsen, L. B. (1989). Speciation of Alismatidae in the Neotropics. In: Holm-Nielsen, L., Nielsen, I. C. & Balslev, H. (eds) Tropical Forests: Botanical Dynamics, Speciation and Diversity, pp. 211–219. London: Academic Press.CrossRefGoogle Scholar
Haynes, R. R., Les, D. H. & Holm-Nielsen, L. B. (1998). Alismataceae. In: Kubitzki, K. (ed.) The Families and Genera of Vascular Plants. Vol. IV – Flowering plants, monocotyledons: Alismatanae and Commelinanae (except Graminae), pp. 11–15. Berlin: Springer-Verlag.Google Scholar
Johansen, D. (1940). Plant Microtechnique. New York: McGraw-Hill.Google Scholar
Junqueira, C. V. (1990). O uso de cortes finos de tecidos na medicina e biologia. Meios e Métodos 66: 10–11.Google Scholar
Les, D. H. & Haynes, R. R. (1995). Systematics of subclass Alismatidae: a synthesis of approaches. In: Rudall, P. J., Cribb, P. J., Cutler, D. F. & Humphries, C. J. (eds) Monocotyledons: Systematics and Evolution, pp. 353–377. Kew: Royal Botanic Gardens.Google Scholar
Lot, A. & Novelo, A. (1984). Afinidades floristicas de las monocotiledoneas acuaticas mesoamericas. In: Darwin, S. P. & Welden, A. L. (eds) Biogeography of Mesoamerica. Proceedings of a Symposium, pp. 147–153. New Orleans: Tulane University.Google Scholar
Matias, L. Q., Soares, A. & Scatena, V. L. (2007). Systematic consideration of petiole anatomy of species of Echinodorus Richard (Alismataceae) from north-eastern Brazil. Flora 202: 395–402.CrossRefGoogle Scholar
Menezes, N. L. De, Silva, D. C., Arruda, R. C. O., Melo-De-Pinna, G. F., Cardoso, V. A., Castro, N. M., Scatena, V. L. & Scremin-Dias, E. (2005). Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons. Consideration on the “PTM”. Anais Acad. Brasil. Ci. 77(2): 259–274.CrossRefGoogle ScholarPubMed
Metcalfe, C. R. (1968). Current concepts in systematic plant anatomy. In: Heywood, V. H. (ed.) Modern Methods in Plant Taxonomy, pp. 146–150. London: Academic Press.Google Scholar
Rogers, G. K. (1983). The genera of Alismataceae in the Southeastern United States. J. Arnold Arbor. 64: 383–420.CrossRefGoogle Scholar
Sifton, H. B. (1945). Air-space tissue in plants. Bot. Rev. 11: 108–143.CrossRefGoogle Scholar
Simão, D. G. & Scatena, V. L. (2004). Morfoanatomia das brácteas em Heliconia (Heliconiaceae) ocorrentes no Estado de São Paulo, Brasil. Acta Bot. Brasil. 18(2): 261–270.CrossRefGoogle Scholar
Stant, M. Y. (1964). Anatomy of the Alismataceae. J. Linn. Soc., Bot. 59: 1–42.CrossRefGoogle Scholar
Tomlinson, P. B. (1982). VIII. Helobiae (Alismatidae). In: Metcalfe, C. R. (ed.) Anatomy of Monocotyledons, vol. 2, pp. 57–81. Oxford: Clarendon Press.Google Scholar