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 uncinulata

HABIT Perennial. Culms 150–200 cm long; wiry. Ligule a fringe of hairs. Leaf-blade base broadly rounded. Leaf-blades reflexed; deciduous at the ligule; 1–6 cm long; 1.5–4 mm wide. Leaf-blade surface pilose; hairy adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong, or pyramidal; 2–14 cm long; 1–2 cm wide. Primary panicle branches simple; 2–3.5 cm long; bearing 1–8 fertile spikelets on each lower branch. Panicle branches angular; scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 0.8–2.7 mm long; scaberulous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; tilted on the pedicel; dorsally compressed; 4.3–5 mm long; falling entire. Spikelet callus attached transversely.

GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1–2.5 mm long; 0.25–0.5 length of spikelet; chartaceous; without keels; 3–5 -veined. Lower glume apex obtuse. Upper glume ovate; chartaceous; with hyaline margins; without keels; 9–11 -veined. 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; ovate; 1 length of spikelet; coriaceous; much thinner on margins; 7–9 -veined; pilose; with hooked hairs; obtuse. Fertile lemma orbicular; 3.5–4 mm long; coriaceous; much thinner on margins; without keel; 5–7 -veined. Lemma margins flat. Lemma apex acute; laterally pinched. Palea coriaceous.

DISTRIBUTION Australasia: Australia. Pacific: southwestern.

NOTES Paniceae. Vickery.

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