GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Isachne comata

HABIT Perennial. Culms rambling; 100–200 cm long. Ligule a fringe of hairs. Leaf-blades lanceolate; 15–25 cm long; 10–22 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or ovate; 10–15 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.5–1.7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.5–1.7 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface hispid; hairy at apex. Lower glume apex acute. Upper glume ovate; 1.5–1.7 mm long; membranous; without keels; 5 -veined. Upper glume surface hispid; hairy at apex. Upper glume apex acute.

FLORETS Fertile lemma orbicular; 1.5–1.7 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3.

DISTRIBUTION Pacific: southwestern.

NOTES Isachneae. WDC 1993.

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