Isachne henryi

HABIT Annual. Culms geniculately ascending, or decumbent; slender; 15–50 cm long. Culm-nodes glabrous. Ligule a fringe of hairs. Leaf-blades lanceolate; 2–8 cm long; 2–5 mm wide. Leaf-blade surface scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 2–12 cm long; 1–5 cm wide. Primary panicle branches 1 -nate; 1–4 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1–8 mm long; tip widened.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate, or orbicular; dorsally compressed; 1.75–2 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, or orbicular; 1.75–2 mm long; 1 length of upper glume; 1 length of spikelet; chartaceous; without keels; 9–11 -veined. Lower glume surface pubescent; hairy on veins. Lower glume apex obtuse. Upper glume ovate, or orbicular; 1.75–2 mm long; 1 length of spikelet; chartaceous; without keels; 9–11 -veined. Upper glume surface pubescent; hairy on veins. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret elliptic, or ovate; 1.75–2 mm long; 1.3–1.4 length of fertile lemma; 1 length of spikelet; chartaceous; 5–7 -veined; obscurely veined; glabrous; obtuse. Palea of lower sterile floret hyaline; 1.5–1.75 mm long. Fertile florets bisexual. Fertile lemma orbicular; 1.25–1.5 mm long; 1.25–1.5 mm wide; coriaceous; without keel; 5–7 -veined. Lemma surface glabrous. Lemma margins involute. Lemma apex obtuse. Palea orbicular; 1–1.5 mm long; coriaceous; 2 -veined.

FLOWER Anthers 3; 0.75–2 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: India.

NOTES Isachneae. Srin. & Sreek. 2005.

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