Gonz�lez Elizondo, M. Socorro; Rosen, David J.; Carter, Richard; Peterson, Paul M.
October 2007
Acta Botanica Mexicana;oct2007, Issue 81, p35
Academic Journal
Se describe e ilustra Eleocharis reznicekii (Cyperaceae, subg. Eleocharis, serie Eleocharis), especie con caracter�sticas morfol�gicas intermedias entre las de Eleocharis densa y las de dos especies de la subserie Eleocharis (E. macrostachya y E. palustris). Se distingue por tener tallos conspicuamente comprimidos (3-5 veces m�s anchos que gruesos en fresco) y estilopodio s�sil sobre una base anular fina. De E. densa se distingue adem�s por tener espiguillas menos densas, estilos en su mayor�a b�fidos y aquenio casi liso a 30x, m�s redondeado hacia el �pice. De E. macrostachya y E. palustris lo hace por su h�bito m�s robusto, espiguillas oblongas a linear-oblongas, gluma proximal envolviendo �nicamente 1/3 a poco m�s de � de la base de la espiga, y por tener la gluma proximal y 1 a 2(3) glumas subproximales sin flor. Hasta ahora, E. reznicekii se conoce solamente del estado de Durango, en el Altiplano Mexicano y piedemonte de la Sierra Madre Occidental.


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