Monographs Details:
Authority:
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Family:
Poaceae
Poaceae
Description:
Genus Description - Annual or perennial herbs of diverse size and habit; culms erect or decumbent, unbranched or sparingly branched. Leaves with auricles minute or lacking; sheaths smooth or scabrous; ligule a membrane or a fringe of hairs; blades filiform to linear, flattened to conduplicate. Main axis of inflorescence with many appressed to divaricate primary branches; secondary branches appressed; rachis terminating in a spikelet; disarticulation at the spikelet base; callus not differentiated. Spikelets abaxial, plano-convex; lower glume typically absent, or when present not encircling the spikelet base; upper glumes nearly as long as the spikelet; lemma of lower floret membranous, sterile; lemma of upper floret as long as the lower one, indurate, fertile, smooth or striate, dull, with involute margins, muticous. Caryopsis with whitish to grayish embryo.
Genus Description - Annual or perennial herbs of diverse size and habit; culms erect or decumbent, unbranched or sparingly branched. Leaves with auricles minute or lacking; sheaths smooth or scabrous; ligule a membrane or a fringe of hairs; blades filiform to linear, flattened to conduplicate. Main axis of inflorescence with many appressed to divaricate primary branches; secondary branches appressed; rachis terminating in a spikelet; disarticulation at the spikelet base; callus not differentiated. Spikelets abaxial, plano-convex; lower glume typically absent, or when present not encircling the spikelet base; upper glumes nearly as long as the spikelet; lemma of lower floret membranous, sterile; lemma of upper floret as long as the lower one, indurate, fertile, smooth or striate, dull, with involute margins, muticous. Caryopsis with whitish to grayish embryo.