Isachne scabrosa

HABIT Perennial. Culms geniculately ascending; 30–100 cm long; woody. Culm-nodes glabrous. Leaf-sheaths antrorsely scabrous; glabrous on surface, or pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades lanceolate; 8–15 cm long; 8–10 mm wide; stiff. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins cartilaginous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; pyramidal; 5–10 cm long. Primary panicle branches 3–7 cm long. Panicle branches flexuous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.8 mm long; 1 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface hispidulous. Lower glume apex obtuse. Upper glume ovate; 1.8 mm long; 1 length of spikelet; membranous; without keels. Upper glume surface hispidulous. Upper glume apex obtuse.

FLORETS Fertile lemma orbicular; 1.5 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3; 1 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Isachneae. Fl Assam 1993.

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