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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. Stolons present. Culms 2–11 cm long. Ligule an eciliate membrane. Leaf-blades filiform.
INFLORESCENCE Dioecious. Inflorescence comprising only a few spikelets.
Spikelets solitary. Fertile spikelets sessile. Male spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 3–7 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 5–11 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0.75 length of upper glume; membranous; without keels; 2–8 -veined. Lower glume surface without pits. Lower glume apex acute. Upper glume lanceolate; 0.75 length of adjacent fertile lemma; herbaceous; without keels; 8 -veined. Upper glume apex acute.
FLORETS Fertile florets female. Fertile lemma ovate; coriaceous; without keel; wingless; 10–13 -veined. Lemma lateral veins obscure. Lemma surface unwrinkled; without grooves. Lemma margins ciliate. Lemma apex acute. Palea tightly convolute around flower; 1 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; fleshy. Anthers 3.
FRUIT Caryopsis with adherent pericarp; oblong. Embryo 0.4 length of caryopsis.
MALE Male inflorescence similar to female; of few spikelets. Male spikelets distinct from female; elliptic. Male spikelet glumes 2. Male spikelet lemma muticous.
DISTRIBUTION North America.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.