Echinodorus tenellus (Mart. ex Schult.f.) Buchenau

POWO follows these authorities in synonymising this name:

• Lehtonen, S. & Myllys, L. (2008). Cladistic analysis of Echinodorus (Alismataceae): simultaneous analysis of molecular and morphological data. Cladistics 24: 218-239. [Cited as Helanthium tenellum.]

This name was accepted following an alternative taxonomy by these authorities:

• Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies. Smithsonian Contributions to Botany 98: 1-1192. [Cited as Echinodorus tenellus.]
• Adams, C.D. (1972). Flowering Plants of Jamaica: 1-848. University of the West Indies, Mona. [Cited as Echinodorus tenellus.]
• Berry, P.E., Holst, B.K. & Yatskievych, K. (eds.) in Steyermark, J., Berry, P.E., Holts, B.K. (eds). (1995). Flora of the Venezuelan Guayana 2: 1-706. Missouri Botanical Garden, St. Louis. [Cited as Echinodorus tenellus.]
• Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown. [Cited as Echinodorus tenellus.]
• Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F. [Cited as Echinodorus tenellus.]
• Espejo Serena, A. & López-Ferrari, A.R. (1993). Las Monocotiledóneas Mexicanas una Sinopsis Florística 1(1): 1-76. Consejo Nacional de la Flora de México, México D.F. [Cited as Echinodorus tenellus.]
• Flora of North America Editorial Committee (2000). Flora of North America North of Mexico 22: 1-352. Oxford University Press, New York, Oxford. [Cited as Echinodorus tenellus.]
• Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919. [Cited as Echinodorus tenellus.]
• Haynes, R.R. & Holm-Nielsen, L.B. (1994). The Alismataceae. Flora Neotropica, Monograph 64: 1-112. [Cited as Echinodorus tenellus.]
• Herkert, J.R. & Ebinger, J.E. (eds.) (2002). Endangered and Threatened Species of Illinois: status and distribution 1: 1-161. Endangered species protection board, Springfield, Illinois. [Cited as Echinodorus tenellus.]
• Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela. [Cited as Echinodorus tenellus.]
• Matias, L.Q. (2007). O Gênero Echinodorus (Alismataceae) no domínio da caatinga Brasileira. Rodriguésia; Revista do Instituto de Biologia Vegetal, Jardim Botânico e Estaçao Biologica do Itatiaya 58: 743-774. [Cited as Echinodorus tenellus.]
• Moscoso, R.H. (1943). Catalogus Florae Domingensis: 1-732. New York. [Cited as Echinodorus tenellus.]
• Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras. [Cited as Echinodorus tenellus.]
• Walderley, M.G.L., Shepherd, G.J., Melhem, T.S. & Giulietti, A.M. (eds.) (2005). Flora Fanerogâmica do Estado de São Paulo 4: 1-392. Instituto de Botânica, São Paulo. [Cited as Echinodorus tenellus.]
• Zuloaga, F.O. & Morrone, O. (eds.) (1996). Pteridophyta, Gymnospermae y Angiospermae (Monocotyledoneae). Catálogo de las Plantas Vasculares de la República Argentina 1: 1-323. Missouri Botanical Garden, St. Louis. [Cited as Echinodorus tenellus.]