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.

Aniselytron agrostoides

HABIT Perennial; caespitose; clumped loosely. Culms geniculately ascending; slender; 20–40 cm long; 2–3 -noded. Culm-internodes striate; smooth. Culm-nodes black. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode. Ligule an eciliate membrane; 3 mm long; entire, or erose; acute. Leaf-blades 10–12 cm long; 3–4 mm wide. Leaf-blade surface smooth. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; equilateral, or nodding; 9–13 cm long. Primary panicle branches ascending, or spreading; distant; 4–5 cm long. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or ovate; laterally compressed; 3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus sparsely hairy; acute.

GLUMES Glumes one the lower absent or obscure, or two; persistent; similar; shorter than spikelet; firmer than fertile lemma. Lower glume orbicular; 0.1 mm long; 0.05 length of upper glume; hyaline. Lower glume apex truncate. Upper glume lanceolate; 1.5–2 mm long; 0.4–0.6 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; 3.5 mm long; 1.5–2 mm wide; membranous; keeled; lightly keeled; 5 -veined. Lemma midvein scaberulous. Lemma lateral veins obscure. Lemma apex dentate; 2 -fid; acuminate; muticous. Palea 1 length of lemma; hyaline; 2 -veined. Palea keels scaberulous. Palea apex acuminate. Rhachilla extension 0.8 mm long; glabrous.

FLOWER Lodicules 2. Anthers 3; 1.2 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; 2 mm long. Hilum punctiform.

DISTRIBUTION Asia-temperate: eastern Asia. Asia-tropical: Malesia.

NOTES Aveneae. Merrill 1996.

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