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.

Leptochloa neesii

HABIT Annual, or perennial; short-lived; caespitose. Culms 60–105 cm long. Culm-internodes terete, or elliptical in section. Culm-nodes glabrous. Lateral branches sparse. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 2–4 mm long. Leaf-blades linear, or lanceolate; flat, or involute; 10–20 cm long; 2–4 mm wide. Leaf-blade surface scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence composed of racemes. Peduncle scaberulous above.

Racemes numerous; borne along a central axis; straight, or arcuate; unilateral; 2.5–9 cm long. Central inflorescence axis 15–45 cm long. Rhachis semiterete; scaberulous on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 1–1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets. Lower glume lanceolate; 0.9–1.5 mm long; 0.9–1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex obtuse to acuminate. Upper glume elliptic; 1–1.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex truncate to acuminate.

FLORETS Fertile lemma elliptic; 1–1.5 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous; pubescent. Lemma lateral veins close to margins. Lemma surface glabrous. Lemma margins pubescent. Lemma apex entire; acute. Palea 2 -veined. Palea surface pubescent; hairy on back.

FRUIT Caryopsis with adherent pericarp; ellipsoid; isodiametric; biconvex; without sulcus; 0.5–0.75 mm long; light brown; obtuse. Embryo 0.5 length of caryopsis.

DISTRIBUTION Asia-tropical: India, Indo-China, and Malesia. Australasia: Australia.

NOTES Eragrostideae. Fl Ceyl 1993.

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