Isachne repens

HABIT Annual, or perennial; short-lived. Stolons present. Culms prostrate; 10–25 cm long; rooting from lower nodes. Culm-nodes pubescent. Leaf-sheaths glabrous on surface, or hispid; outer margin hairy. Ligule a fringe of hairs; 1–2 mm long. Leaf-blades lanceolate; 5–7 cm long; 10–18 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy; hairy adaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or ovate; 3–5.5 cm long. Primary panicle branches ascending, or spreading.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.1–2.4 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 length of spikelet; membranous; without keels; 7–9 -veined. Lower glume surface hispidulous. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 9–11 -veined. Upper glume surface hispidulous. Upper glume apex acute.

FLORETS Fertile lemma ovate, or orbicular; coriaceous; without keel. Lemma margins involute; pubescent. Lemma apex obtuse. Palea coriaceous. Palea surface puberulous (upper floret).

DISTRIBUTION Asia-temperate: China and eastern Asia.

NOTES Isachneae. Fl China 2007.

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