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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Eragrostis articulata
HABIT Annual; caespitose. Glands annular (on pedicels). Culms erect; 14–35 cm long. Leaf-sheaths glandular. Ligule a fringe of hairs; 0.5–1 mm long. Leaf-blades linear, or lanceolate; flat, or conduplicate; 2.5–8 cm long; 2–5 mm wide. Leaf-blade surface hirsute; with tubercle-based hairs. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; oblong, or ovate; 5–16 cm long. Primary panicle branches ascending, or spreading. Panicle branches stiff.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels glandular.
FERTILE SPIKELETS Spikelets comprising 8–20 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3–10 mm long; 1.5–3 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 0.8–1 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
FLORETS Fertile lemma ovate; 1.5 mm long; membranous; keeled; 3 -veined. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; cuneate; fleshy. Anthers 2.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION South America: western South America, Brazil, and southern South America.
NOTES Eragrostideae. Gr Bahia 1995.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.