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Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Isachne puberula
HABIT Perennial. Culms decumbent; 15–30 cm long. Culm-internodes distally glabrous, or pubescent. Culm-nodes pubescent. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades 2–5 cm long; 2–3 mm wide; stiff. Leaf-blade surface scabrous; rough on both sides; glabrous, or pilose; with tubercle-based hairs. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex acute.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 3–6 cm long; 1.5–3 cm wide.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.75 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
GLUMES Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume elliptic, or oblong; 0.75 length of spikelet; membranous; without keels; 7–9 -veined. Lower glume surface flat; scabrous; rough between veins. Lower glume apex obtuse. Upper glume elliptic, or oblong; 0.8 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface scabrous; rough between veins. Upper glume apex obtuse.
FLORETS Fertile lemma elliptic, or obovate; 1.5 mm long; chartaceous; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea chartaceous; 2 -veined.
FLOWER Anthers 3; 1–1.2 mm long.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-tropical: Indo-China.
NOTES Isachneae. Bor 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.