IDENTIDAD DE DOS ESPECIES SUDAMERICANAS DE RHYNCHOSPORA (CYPERACEAE): R. ROSTRATA Y R. ORGANENSIS

Encarnación R. Guaglianone; Gerry Moore

doi:10.14522/darwiniana.2014.393-4.233

Identity of two South American species of Rhynchospora (Cyperaceae): R. rostrata and R. organensis

Authors

Encarnación R. Guaglianone Instituto de Botánica Darwinion, Casilla de Correo 22, B1642HYD San Isidro, Buenos Aires
Gerry Moore Brooklyn Botanic Garden,1000 Washington Avenue, Brooklyn, New York 11225-1099

DOI:

https://doi.org/10.14522/darwiniana.2014.393-4.233

Keywords:

Taxonomy, Cyperaceae, Rhynchospora, sect. Longirostres, Rhynchospora organensis, Rhynchospora rostrata, South America

Abstract

The name Rhynchospora rostrata has been applied to two different species of Rhynchospora (subgn. Haplostylis, sect. Longirostres) from South America. True R. rostrata is known only from Brazil (Distrito Federal, Goiás, Minas Gerais). The correct name for the other species going under the name R. rostrata is R. organensis, and it is known from Argentina, Brazil, Paraguay, and Uruguay. R.
organensis returns to the status of species after being considered as R. corymbosa var. organensis. R. corymbosa, R. rostrata and R. organensis can be distinguished using inflorescence and achene
characters, and a key to differentiate them is provided. R. rostrata and R. organensis are also described and illustrated.

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How to Cite

Guaglianone, E. R., & Moore, G. (2001). Identity of two South American species of Rhynchospora (Cyperaceae): R. rostrata and R. organensis. Darwiniana, Nueva Serie, 39(3-4), 239–246. https://doi.org/10.14522/darwiniana.2014.393-4.233