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Diarrhena obovata

DIARRHENA P. Beauv.
Plants hermaphroditic, rhizomatous, perennial. Culms erect (stiff), glabrous; intermodes hollow, terete. Leaves primarily basal, not distinctly distichous; sheaths terete, margins open; auricles absent; ligules membranous; blades flat (broad), linear, lax. Panicles (rarely racemes) narrow (erect or drooping), primary branches ascending (secondary branches ascending). Spikelets solitary, laterally compressed, disarticulation above glumes, awnless, pedicellate; florets 3-6, reduced floret at apex, callus glabrous; rachilla not extending beyond upper floret; glumes 2, first 1-3-veined, second 3-5-veined, unequal, shorter than first floret, glabrous, awnless to mucronate; lemmas 3-5-veined, chartaceous to indurate, glabrous to scabrous, entire, awnless to mucronate; awn (when present) apical and straight; veins converging at apex; paleas 2-veined, awnless; glabrous to scabrous. Stamens 2-3 (rarely 1) anthers pale yellow. Caryopses not compressed, apex beak like. Base chromosome number x=10. A woodland genus of about four species.