Isachne sikkimensis

HABIT Annual. Culms decumbent; 5–10 cm long; rooting from lower nodes. Culm-nodes bearded. Leaf-sheaths pilose. Ligule a fringe of hairs. Leaf-blades lanceolate; 3–7 cm long; 3–7 mm wide. Leaf-blade surface pubescent; with tubercle-based hairs. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 4 cm long. Primary panicle branches 2 -nate. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels eglandular.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong, or ovate; dorsally compressed; acute; 2.25 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 elliptic; 1 length of spikelet; chartaceous; much thinner on margins; without keels; 5–7 -veined. Lower glume apex cuspidate. Upper glume elliptic; 1 length of spikelet; chartaceous; with hyaline margins; without keels; 5–7 -veined. Upper glume apex cuspidate.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret similar to fertile lemma. Fertile lemma elliptic; 1.5 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex acute. Palea coriaceous; 2 -veined.

FLOWER Anthers 3; 3.6 mm long (male), or 1 mm long (bisexual).

FRUIT Caryopsis with adherent pericarp.

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

NOTES Isachneae. Bor 1994.

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