GrassBase - The Online World Grass Flora


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

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

Ancistrachne numaeensis

HABIT Perennial. Culms rambling; 50–100 cm long; wiry. Lateral branches ample. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades 3–13 cm long; 2–8 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; linear; 1–6 cm long; 0.5–1 cm wide. Primary panicle branches appressed; indistinct the panicle almost racemose; 0.2–1 cm long; bearing 1–3 fertile spikelets on each lower branch.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1 mm long; tip cupuliform.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; tilted on the pedicel; dorsally compressed; compressed slightly; 3 mm long; falling entire. Spikelet callus attached transversely.

GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5–1 mm long; 0.15–0.33 length of spikelet; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume surface puberulous. Lower glume apex acute. Upper glume oblong; 3 mm long; 1 length of spikelet; chartaceous; without keels; 7–9 -veined. Upper glume lateral veins ribbed. Upper glume surface pilose; with hooked hairs. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; oblong; 1 length of spikelet; chartaceous; 7 -veined; ribbed; pilose; with hooked hairs; acute. Fertile lemma oblong; 3 mm long; coriaceous; without keel. Lemma margins flat. Lemma apex acute; pubescent. Palea coriaceous.

DISTRIBUTION Pacific: southwestern.

NOTES Paniceae. WDC 1993.

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