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 barrelieri

HABIT Annual; caespitose. Culms geniculately ascending; 5–50(–80) cm long. Ligule a fringe of hairs. Leaf-blades flat, or involute; 2–10 cm long; 2–5.5 mm wide; glaucous. Leaf-blade margins eglandular.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate, or oblong; 3–20 cm long. Primary panicle branches bearing spikelets almost to the base. Panicle branches stiff; glandular.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels glandular.

FERTILE SPIKELETS Spikelets comprising 5–30 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5–20 mm long; 1.3–2 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.

GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 0.9–1.3 mm long; 0.5–0.6 length of upper glume; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.5–2 mm long; 0.7–0.9 length of adjacent fertile lemma; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile florets appressed to rhachilla; free at tip. Fertile lemma oblong, or ovate; 1.7–2.6 mm long; membranous; yellow, or grey, or purple; keeled; 3 -veined. Lemma lateral veins distinct. Lemma apex obtuse. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 0.2 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid, or oblong; without sulcus; 0.65–1 mm long; dark brown.

DISTRIBUTION Europe: southwestern and southeastern. Africa: north, Macaronesia, west tropical, west-central tropical, northeast tropical, southern tropical, and south. Asia-temperate: western Asia and Arabia. Asia-tropical: India. Australasia: Australia. North America: northwest USA, north-central USA, southwest USA, south-central USA, and Mexico. South America: Caribbean, western South America, and southern South America.

NOTES Eragrostideae. Fl Pak.

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