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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Anthephora truncata

HABIT Annual. Culms decumbent; 25–100 cm long; rooting from lower nodes. Leaf-sheaths hirsute; with tubercle-based hairs. Leaf-sheath auricles erect. Ligule an eciliate membrane; 3–4 mm long. Leaf-blades 5–15 cm long; 2–5 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; 3–10 cm long. Primary panicle branches accrescent to a central axis; with sessile scars on axis. Panicle axis angular; scabrous; bearing deciduous spikelet clusters.

Spikelets subtended by an involucre. Fertile spikelets sessile; 3–4 in the cluster. Companion sterile spikelets sessile; 3–4 in the cluster. Involucre composed of imperfect spikelets; connate into a disc below; oblong; 3.5–6 mm long; base obtuse.

STERILE SPIKELETS Companion sterile spikelets represented by single glumes; oblong; 3.5–6 mm long; as long as fertile, or longer than fertile; deciduous with the fertile. Companion sterile spikelet glumes united below; coriaceous; thinner on margins; winged on margins (above); 7–9 -veined; pubescent; emarginate to acute; awned; with 1–25 mm long awn.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3.5–4 mm long; falling entire; deciduous with accessory branch structures.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume subulate; 1 length of spikelet.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; 3 -veined; puberulous; acute. Fertile lemma lanceolate; 3.5–4 mm long; cartilaginous; much thinner on margins; without keel; 3 -veined. Lemma margins flat; covering most of palea. Lemma apex acute. Palea cartilaginous; 1-keeled.

FLOWER Anthers 3; 2 mm long.

DISTRIBUTION Africa: west-central tropical, east tropical, and southern tropical.

NOTES Paniceae. FTEA.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.