Isachne kunthiana

HABIT Perennial. Culms erect, or geniculately ascending; 10–60 cm long. Culm-nodes bearded. Leaf-sheaths pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades lanceolate, or elliptic, or oblong, or ovate; 1–6 cm long; 3–15 mm wide. Leaf-blade surface pilose; sparsely hairy; with tubercle-based hairs. Leaf-blade margins cartilaginous. Leaf-blade apex acute, or acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 2–10 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; 2–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate, or ovate; 1.9–3.2 mm long; 0.9 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface hispidulous; hairy above. Lower glume apex acuminate. Upper glume lanceolate, or ovate; 2–2.5 mm long; 1 length of spikelet; membranous; without keels. Upper glume surface setose; hairy above. Upper glume apex attenuate.

FLORETS Fertile lemma lanceolate, or ovate; 2–3.5 mm long; chartaceous; without keel. Lemma margins involute. Lemma apex acuminate. Palea chartaceous; 2 -veined.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia.

NOTES Isachneae. Nair 1993.

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