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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 Annual. Culms erect, or decumbent; 5–50 cm long. Leaf-sheath auricles falcate. Ligule an eciliate membrane.
INFLORESCENCE Inflorescence composed of racemes.
Racemes single; oblong; bilateral. Spikelet packing broadside to rhachis.
Spikelets ascending; in pairs. Fertile spikelets sessile; 2 in the cluster.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets linear; dorsally compressed; 8–12 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes collateral; persistent; exceeding apex of florets; parallel to lemmas, or recurved at apex. Lower glume subulate; 1 length of upper glume. Lower glume surface without pits. Upper glume subulate. Upper glume surface scabrous.
FLORETS Fertile lemma lanceolate; chartaceous; without keel; wingless; 5 -veined. Lemma surface scabrous; unwrinkled; without grooves. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn straight, or curved. Palea 1 length of lemma; 2 -veined. Palea keels scabrous. Apical sterile florets 1 in number; barren; linear.
FLOWER Ovary with a fleshy appendage below style insertion; pubescent on apex.
FRUIT Caryopsis with adherent pericarp; linear; dorsally compressed; apex fleshy. Embryo 0.1 length of caryopsis. Hilum linear; 1 length of caryopsis.
DISTRIBUTION Europe, or Africa, or Temperate Asia, or Tropical Asia, or Australasia, or North America.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.