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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; mat forming. Rhizomes short. Stolons absent, or present. Basal innovations flabellate. Culms 10–60 cm long. Culm-nodes glabrous. Leaf-sheaths keeled. Ligule a ciliolate membrane. Leaf-blades flat, or conduplicate; 4.5–22 cm long; 1.5–7 mm wide. Leaf-blade apex obtuse, or abruptly acute.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 2–4; paired, or digitate; unilateral; 1.5–7 cm long. Rhachis angular; glabrous on surface, or pubescent on surface; glabrous on margins. Spikelet packing adaxial; regular; 2 -rowed.
Spikelets appressed; solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; obtuse, or subacute; 1.6–2.1 mm long; falling entire.
GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume elliptic; 1 length of adjacent fertile lemma; 1 length of spikelet; membranous; without keels; 2–5 -veined. Upper glume surface puberulous. Upper glume apex obtuse.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of fertile lemma; 1 length of spikelet; 2–5 -veined; puberulous; acute. Fertile lemma obovate; 1.5–2 mm long; indurate; pallid; without keel. Lemma margins involute. Lemma apex obtuse; without ornament (or few obscure hairs). Palea involute; indurate.
DISTRIBUTION Africa: west tropical, southern tropical, south, and western Indian ocean. Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia and New Zealand. Pacific: southwestern, south-central, and north-central. North America: north-central USA, south-central USA, southeast USA, and Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, Brazil, and southern South America.
NOTES Paniceae. FZ.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.