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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 cylindriflora
HABIT Annual, or perennial; caespitose. Stolons absent, or present. Butt sheaths without ribs; glabrous to pubescent. Glands sunken crateriform. Culms erect, or geniculately ascending, or decumbent; 30–100 cm long; without nodal roots, or rooting from lower nodes. Culm-internodes eglandular, or glandular (below node). Lateral branches lacking, or sparse. Leaf-sheaths eglandular, or glandular; glabrous on surface, or pilose (rarely); with tubercle-based hairs. Ligule a fringe of hairs. Leaf-blades flat, or involute; 3–25 cm long; 1–5 mm wide; eglandular, or glandular.
INFLORESCENCE Inflorescence a panicle.
Panicle open; elliptic, or ovate; 2–40 cm long. Primary panicle branches whorled at lower nodes, or whorled at most nodes. Panicle branches glabrous in axils, or pubescent in axils, or bearded in axils.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 4–14 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 3–8 mm long; 1–1.5 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas; tough throughout, or fragile above; with the distal florets disarticulating separately.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate, or ovate; 1–2.7 mm long; 1 length of upper glume; hyaline, or membranous; grey; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate to ovate; 1–2.7 mm long; 0.75–1.3 length of adjacent fertile lemma; hyaline, or membranous; grey; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
FLORETS Fertile lemma elliptic; 1.5–2 mm long; membranous; dark green, or grey; keeled; 3 -veined. Lemma lateral veins obscure. Lemma apex obtuse, or acute. Palea keels smooth, or scaberulous. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; cuneate; fleshy. Anthers 3; 0.8–1 mm long.
FRUIT Caryopsis with adherent pericarp; ellipsoid; 0.5–0.7 mm long.
DISTRIBUTION Africa: north, west tropical, west-central tropical, northeast tropical, east tropical, southern tropical, south, and western Indian ocean. Asia-temperate: Arabia. Australasia: Australia. Pacific: north-central.
NOTES Eragrostideae. =Eragrostis trichophora, Eragrostis rigidior. FTEA 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
