Leersia sayanuka

HABIT Perennial. Culms decumbent; 30–120 cm long. Culm-internodes smooth. Culm-nodes pubescent. Leaf-sheaths 8–10 cm long; retrorsely scabrous. Ligule an eciliate membrane; 0.5–1.5 mm long; truncate. Leaf-blades linear, or lanceolate; 7–10 cm long; 6–10 mm wide; flaccid; glaucous. Leaf-blade venation with 8–10 secondary veins. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or oblong; loose; 5–10 cm long. Primary panicle branches 1 -nate; sparsely divided. Panicle branches flexuous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear, or oblong; laterally compressed; compressed strongly; 6–7 mm long; 1.5 mm wide; falling entire.

GLUMES Glumes both absent or obscure.

FLORETS Fertile lemma linear, or oblong; 6–7 mm long; chartaceous; keeled; 5 -veined. Lemma midvein pectinately ciliate. Lemma surface scaberulous. Lemma margins involute. Lemma apex acute. Palea elliptic; 1 length of lemma; chartaceous; 3 -veined; 1-keeled. Palea keels scaberulous; eciliate. Palea apex entire.

FLOWER Lodicules 2. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China and eastern Asia.

NOTES Oryzeae. Ohwi 2005.

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