Isachne pangerangensis

HABIT Perennial; cushion forming, or mat forming, or caespitose. Culms geniculately ascending, or decumbent; 10–60 cm long. Leaves distichous. Leaf-sheaths hirsute; outer margin hairy. Ligule a fringe of hairs. Leaf-blade base amplexicaul. Leaf-blades lanceolate; 1–3 cm long; 3–5 mm wide; stiff. Leaf-blade surface ribbed. Leaf-blade margins ciliate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or ovate; 2–9 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; obtuse; 2.2 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; terete.

GLUMES Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 2.2 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 5–7 -veined. Lower glume surface glabrous, or pubescent; hairy at apex. Lower glume apex acute. Upper glume ovate; 2.2 mm long; membranous; without keels; 5–7 -veined. Upper glume surface glabrous, or puberulous; hairy at apex. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2.2 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse; without ornament, or pubescent. Palea coriaceous; 2 -veined.

FLOWER Anthers 3.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Isachneae. Jansen 1993.

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