ELYMUS HITCHCOCKI Y E. SCABRIFOLIUS (POACEAE), DOS ESPECIES SUDAMERICANAS POCO AFINES QUE HAN SIDO CONSIDERADAS COESPECÍFICAS

JUAN H. HUNZIKER ¹

Instituto de Botánica Darwinion, Casilla de Correo 22, 1642 San Isidro, Argentina.

Laboratorio de Genética - Dpto. de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina.

ABSTRACT. Hunziker, J. H. 1998. Elymus hitchcocki and E. scabrifolius (Poaceae), two South American species poorly related that have been considered conspecific. Darwiniana 35: 167-168.

Elymus hitchcocki Davidse and E. scabrifolius (Döll) J. H. Hunz. are regarded as species distantly related and not as conspecific as considered recently by several authors. A number of morphological, ecological, distributional and chromosomal differences, which were pointed out more than 30 years ago, are stressed. A new status and combination is proposed for the latter taxon.

Keywords: Taxonomy, Elymus, Poaceae.

Palabras clave: Taxonomía, Elymus, Poaceae.

¹ Miembro de la Carrera del Investigador, CONICET