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.

Micraira dunlopii

HABIT Perennial; mat forming. Culms prostrate; 3–5 cm long; 0.5 mm diam. Culm-internodes 0.1 cm long; estriate. Leaves cauline; spiral. Leaf-sheaths 0.3–0.4 cm long; longer than adjacent culm internode; as wide as blade at the collar; outer margin glabrous, or hairy. Leaf-sheath oral hairs bearded; 1–1.5 mm long. Ligule a ciliolate membrane; 0.1–0.2 mm long. Leaf-blades deciduous at the ligule; flat, or conduplicate; 6.5–9.5 cm long; 0.3 mm wide; herbaceous, or coriaceous; stiff. Leaf-blade venation comprising 3 vascular bundles. Leaf-blade surface scaberulous; glabrous. Leaf-blade margins scaberulous. Leaf-blade apex obtuse to acute.

INFLORESCENCE Inflorescence a panicle. Peduncle glandular.

Panicle open; ovate; 1–1.3 cm long. Primary panicle branches 0.3–0.5 cm long. Panicle branches glandular; with prominent pulvini.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels glandular.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 1 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong, or ovate; 1 mm long; 1 length of upper glume; membranous; much thinner on margins; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex truncate, or obtuse; mucronate. Upper glume oblong, or ovate; 1 mm long; 2–3 length of adjacent fertile lemma; membranous; with hyaline margins; 1-keeled; 1 -veined. Upper glume primary vein conspicuous. Upper glume lateral veins absent. Upper glume apex truncate, or obtuse; mucronate.

FLORETS Fertile lemma oblong; 0.3–0.5 mm long; membranous; keeled; 3 -veined. Lemma lateral veins ribbed. Lemma apex entire, or dentate; 3 -fid; truncate, or obtuse; muticous, or mucronate. Palea oblong; hyaline; 2 -veined. Palea apex divided to base; 2 -fid.

FLOWER Lodicules absent. Anthers 2; 0.8 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid, or obovoid; 0.2–0.5 mm long; smooth. Embryo 0.25 length of caryopsis.

DISTRIBUTION Australasia: Australia.

NOTES Micraireae. Lazarides.

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