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Dissections:
Oryzopsis micrantha

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ORYZOPSIS Michx. Ricegrass
Plants hermaphroditic, caespitose, perennial. Culms erect or ascending, nodes glabrous; internodes hollow or solid, terete. Leaves basal, not distinctly distichous; sheaths terete, margins open; auricles absent; ligules membranous; blades flat or folded or involute, not pungent, linear, lax. Panicles open or narrow or contracted; primary branches ascending, terminating in a spikelet. Spikelets solitary, terete. or laterally compressed, awned, pedicellate, disarticulation above glumes; florets 1, reduced floret absent, callus bearded (blunt), rachilla not extended beyond floret; glumes 2, 3-7-veined (acute), equal, longer than floret, glabrous or hairy; lemmas 3-5-veined, coriaceous or indurate, margins overlapping and concealing palea or margins not completely overlapping; glabrous or hairy, apex obscurely bilobed, awn (1) apical, wavy or geniculate; paleas 2-veined (but without keels) flat, one-third to nearly equal to lemma, awnless, glabrous. Stamens 3; anthers yellow or yellow with purple tinge. Caryopses terete. Base chromosome number x=11.

A temperate or subtropical genus of about 35 species. The species are usually from open habitats (rarely shade), and occur in mesic to xeric regions.