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.

Eragrostis theinlwinii

HABIT Annual; caespitose. Culms erect; 30–60 cm long. Culm-internodes glandular; smooth; distally glabrous. Leaf-sheaths mostly shorter than adjacent culm internode; glandular; viscid; smooth; glabrous on surface. Ligule a fringe of hairs. Leaf-blades involute; 7–15 cm long; 3–6 mm wide; glandular; viscid. Leaf-blade surface glabrous. Leaf-blade margins glabrous, or ciliate; hairy at base.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong, or ovate; 7–15 cm long; 2–3.5 cm wide. Primary panicle branches not whorled, or whorled at lower nodes. Panicle axis scaberulous; glabrous. Panicle branches capillary; glandular; viscid.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 6–10 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 3–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.5 mm long; 1 length of upper glume; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.5 mm long; 1 length of adjacent fertile lemma; 1-keeled. Upper glume primary vein scabrous. Upper glume apex acute.

FLORETS Fertile lemma elliptic, or oblong; 1.5 mm long; membranous; keeled; 3 -veined. Lemma midvein without distinctive roughness. Lemma margins tuberculate; ciliate. Lemma hairs 0.5–0.75 mm long. Lemma apex apiculate. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FRUIT Caryopsis with adherent pericarp; obovoid; 0.5 mm long; light brown.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Eragrostideae. Bor 1997.

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