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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.
Sporobolus geminatus
HABIT Perennial; caespitose. Culms erect; 90–200 cm long. Ligule a fringe of hairs. Leaf-blades 60–120 cm long; 8 mm wide; coriaceous; stiff.
INFLORESCENCE Inflorescence a panicle.
Panicle open; linear, or lanceolate; effuse; 30–40 cm long; 3–5 cm wide. Panicle branches capillary; glabrous in axils.
Spikelets solitary (lateral), or in pairs (distal). Fertile spikelets pedicelled; 2 in the cluster. Pedicels filiform.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.5–1.9 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 0.7–1.1 mm long; 0.7–0.9 length of upper glume; hyaline; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1–1.2 mm long; 0.5–0.66 length of adjacent fertile lemma; hyaline; dark green; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
FLORETS Fertile lemma ovate; 1.5–1.9 mm long; membranous; dark green; without keel; 1 -veined. Lemma apex acute. Palea 2 -veined. Palea keels approximate.
FLOWER Anthers 3; 0.7–0.8 mm long.
FRUIT Caryopsis with free soft pericarp; ellipsoid; 0.8 mm long.
DISTRIBUTION Africa: east tropical.
NOTES Eragrostideae. FTEA.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.