Isachne mysorensis

HABIT Annual; caespitose; clumped loosely. Culms erect; slender; 6–8 cm long. Culm-internodes distally pubescent. Leaf-sheaths 1.3 cm long; pilose. Ligule absent. Leaf-blade base cordate. Leaf-blades ovate; 0.3–1.2 cm long; 5–15 mm wide. Leaf-blade surface pilose; sparsely hairy; hairy adaxially. Leaf-blade margins tuberculate-ciliate. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle. Peduncle glabrous.

Panicle open; pyramidal; 2.5–3 cm long; 0.8–1.2 cm wide. Primary panicle branches spreading; 1 -nate.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 3 mm long; glabrous.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.2 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 ovate; 1 mm long; 0.9 length of spikelet; membranous; without keels. Lower glume surface pilose; hairy at apex. Lower glume apex obtuse. Upper glume obovate; 1.2 mm long; 1 length of spikelet; membranous; without keels. Upper glume surface pilose; hairy at apex. Upper glume apex acute.

FLORETS Fertile florets bisexual (lower), or female (upper). Fertile lemma orbicular; 1 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea 1 length of lemma; coriaceous; 2 -veined. Palea surface pubescent.

FLOWER Anthers 3; 0.5 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 0.5 mm long.

DISTRIBUTION Asia-tropical: India.

NOTES Isachneae. Raghavan 2005.

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