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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 erect, or decumbent; 20–100 cm long. Ligule an eciliate membrane.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted. Primary panicle branches whorled at most nodes.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear.
FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with a barren rhachilla extension, or with diminished florets at the apex. Spikelets elliptic; laterally compressed; 4–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets, or definite; pubescent. Floret callus evident; pubescent; truncate.
GLUMES Glumes persistent; reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous; without pits. Lower glume apex acute. Upper glume ovate; 1–1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface asperulous. Upper glume apex acute.
FLORETS Fertile lemma oblong; indurate; without keel; wingless; 5–7 -veined. Lemma lateral veins obscure. Lemma surface scaberulous; unwrinkled; without grooves. Lemma margins convolute; covering most of palea. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; membranous. Anthers 3. Ovary pubescent on apex.
FRUIT Caryopsis with adherent pericarp; ovoid; trigonous. Hilum linear; 0.33 length of caryopsis.
DISTRIBUTION South America.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.