Isachne chevalieri

HABIT Annual. Culms decumbent; 12–15 cm long. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a fringe of hairs. Leaf-blades 2–3 cm long; 2.5–3 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 4–4.5 cm long; bearing few spikelets. Primary panicle branches ascending, or spreading; 1–2.5 cm long. Panicle branches capillary; smooth.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.2–1.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets.

GLUMES Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.8–1.1 mm long; 0.66 length of spikelet; membranous; without keels. Lower glume surface asperulous; puberulous. Lower glume apex obtuse. Upper glume ovate; 0.8–1.1 mm long; 0.66 length of spikelet; membranous; without keels. Upper glume surface asperulous; puberulous. Upper glume apex obtuse.

FLORETS Fertile florets with the lowest dissimilar. Lowest fertile lemma ovate; 1.2–1.5 mm long; thinner than adjacent lemma. Fertile lemma orbicular; 1–1.2 mm long; cartilaginous; shiny; without keel; 5 -veined. Lemma margins involute. Lemma apex obtuse. Palea cartilaginous; 2 -veined.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Isachneae. Lecomte 1994.

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