Sporobolus collettii

HABIT Annual. Culms erect; slender; 20–40 cm long. Ligule a ciliolate membrane; 1 mm long. Leaf-blades linear, or lanceolate; 2–5 cm long; 2–5 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous; tuberculate-ciliate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; pyramidal; 3–8 cm long. Primary panicle branches spreading; whorled at most nodes; sparsely divided; rebranched below middle; 1 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; dissimilar; reaching apex of florets; gaping. Lower glume lanceolate; 0.8–1 mm long; 0.66 length of upper glume; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume ovate; 1.25–1.5 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.25–1.5 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 2 -veined. Palea keels approximate.

FLOWER Anthers 3.

FRUIT Caryopsis with free soft pericarp; orbicular; quadrangular; 0.75 mm long.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Eragrostideae. Bor 1993.

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