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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 30–45 cm long. Culm-internodes elliptical in section. Lateral branches sparse. Ligule a ciliolate membrane. Leaf-blade margins cartilaginous.
INFLORESCENCE Inflorescence a panicle with branches tipped by a raceme; exserted, or embraced at base by subtending leaf.
Racemes bearing a triad of spikelets. Rhachis obsolete. Raceme-bases filiform; extended into an oblong appendage.
Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels filiform.
STERILE SPIKELETS Companion sterile spikelets represented by barren pedicels, or rudimentary, or well-developed; separately deciduous.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 8.3–12 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; bearded; base pungent; attached obliquely.
GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume obovate; coriaceous; without keels. Lower glume surface rugose; without pits. Lower glume apex rostrate; muticous, or awned. Upper glume oblong; coriaceous. Upper glume apex attenuate; awned; 1 -awned.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; hyaline; 2 -veined; truncate, or obtuse. Fertile lemma linear; hyaline; wingless; 3 -veined. Lemma surface unwrinkled; without grooves. Lemma margins ciliate. Lemma apex attenuate; awned; 1 -awned. Principal lemma awn geniculate. Column of lemma awn pubescent. Palea absent or minute.
FLOWER Lodicules 2; membranous. Anthers 3.
FRUIT Caryopsis with adherent pericarp; ellipsoid. Hilum punctiform.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.