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GrassBase - The Online World Grass Flora
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
HABIT Perennial. Rhizomes elongated. Culms 50–100 cm long. Ligule a fringe of hairs. Leaf-blades filiform.
INFLORESCENCE Inflorescence a panicle.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
FERTILE SPIKELETS Spikelets comprising 2–6 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 5–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite. Floret callus bearded.
GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0.75–1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface without pits. Lower glume apex acuminate. Upper glume lanceolate; 0.5–1 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acuminate.
FLORETS Fertile lemma lanceolate; chartaceous; keeled; wingless; 3 -veined. Lemma surface unwrinkled; without grooves. Lemma margins pubescent. Lemma apex acute, or acuminate; muticous, or mucronate. Apical sterile florets resembling fertile though underdeveloped.
FRUIT Caryopsis with adherent pericarp; ellipsoid.
DISTRIBUTION North America.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.