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.

Ancistragrostis

HABIT Perennial. Culms 6–10 cm long. Ligule an eciliate membrane. Leaf-blades filiform.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted.

Spikelets solitary. Fertile spikelets pedicelled.

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; shorter than spikelet; thinner than fertile lemma; gaping. Lower glume ovate; 0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface without pits. Lower glume apex acute. Upper glume ovate; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; cartilaginous; keeled; wingless; 5 -veined. Lemma surface unwrinkled; without grooves. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn subapical; hooked. Palea 0.6 length of lemma.

FLOWER Anthers 3.

DISTRIBUTION Tropical Asia.

Please cite this publication as detailed in How to Cite Version: 27th January 2014.