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 gunniana

HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 7–35 cm long; 2–3 -noded. Culm-internodes scaberulous. Ligule an eciliate membrane; 1 mm long; truncate, or obtuse. Leaf-blades filiform; convolute; 2–15 cm long; 0.5–0.8 mm wide. Leaf-blade surface smooth, or scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle open, or contracted; lanceolate, or oblong, or pyramidal; dense; 2–9 cm long. Primary panicle branches spreading; 2–5 -nate. Panicle branches stiff.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 1.7–2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.2 length of lemma.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma; gaping. Lower glume ovate; 0.8–1.2 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.8–1.2 mm long; 0.5–0.7 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; 1.7–2 mm long; cartilaginous; keeled; 3–5 -veined. Lemma lateral veins ribbed. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn subapical; straight; 0.5 mm long overall. Palea 1 length of lemma. Rhachilla extension 0.33–0.5 length of fertile floret; glabrous, or pubescent.

FLOWER Anthers 3.

DISTRIBUTION Australasia: Australia.

NOTES Aveneae. Vickery.

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