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.

Ancistragrostis uncinioides

HABIT Perennial; caespitose. Culms 6–10 cm long; 2 -noded. Ligule an eciliate membrane; 1.1–1.5 mm long; lacerate. Leaf-blades filiform; convolute; 3–5 cm long; 0.8–1.3 mm wide. Leaf-blade surface scaberulous; rough abaxially. Leaf-blade apex obtuse.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; 2.5–3 cm long; 0.4–0.5 cm wide.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5–1.8 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 2.8–3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma; gaping. Lower glume ovate; 1.9–2.1 mm long; 0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2–2.3 mm long; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2.8–3 mm long; cartilaginous; keeled; 5 -veined. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn subapical; hooked; 0.7–1.2 mm long overall. Palea 0.6 length of lemma. Rhachilla extension 0.2 length of fertile floret; pilose; with 0.5–0.7 mm long hairs.

FLOWER Anthers 3; 0.7–1.2 mm long.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Aveneae. WDC.

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