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Descriptions

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

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

Isachne vitiensis

HABIT Perennial. Culms decumbent; 30–105 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades lanceolate; 5–20 cm long; 6–19 mm wide; stiff.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 5–25 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.3–1.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.8 length of upper glume; 0.66 length of spikelet; membranous; without keels. Lower glume apex acute. Upper glume ovate; 0.75 length of spikelet; membranous; without keels. Upper glume apex acute.

FLORETS Fertile lemma obovate; 1–1.3 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3.

DISTRIBUTION Pacific: southwestern.

NOTES Isachneae. Parham 1993.

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