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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; 20–40 cm long. Ligule an eciliate membrane.
INFLORESCENCE Inflorescence composed of racemes.
Racemes single; unilateral. Rhachis subcylindrical and excavated. Spikelet packing broadside to rhachis; distant; 2 -rowed.
Spikelets sunken; solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 2.2–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
GLUMES Glumes collateral; persistent; shorter than spikelet; firmer than fertile lemma. Lower glume oblong; 0.8 length of upper glume; coriaceous; 1-keeled; 1–5 -veined. Lower glume surface without pits. Lower glume apex emarginate. Upper glume oblong; 0.8 length of adjacent fertile lemma; coriaceous; 1-keeled; 5 -veined. Upper glume apex emarginate.
FLORETS Fertile lemma elliptic; chartaceous; without keel; wingless; 5 -veined. Lemma surface unwrinkled; without grooves. Lemma apex entire, or dentate; 2 -fid; emarginate; muticous, or mucronate.
FLOWER Anthers 3. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; ellipsoid. Hilum punctiform.
DISTRIBUTION Europe, or Africa, or Temperate Asia.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.