Isachne pallens

HABIT Perennial. Culms decumbent; 30–60 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 6–8 cm long; 2–4 mm wide. Leaf-blade surface glabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 3–8 cm long; 2–3 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; 2 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 2 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume ovate; 2 mm long; membranous; without keels; 7 -veined. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.3–1.6 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp; ovoid; 1 mm long.

DISTRIBUTION Pacific: north-central.

NOTES Isachneae. Wagner 1993.

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