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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Micraira multinervia

HABIT Perennial; mat forming. Culms prostrate; 10–15 cm long; 1 mm diam. Culm-internodes 0.1–0.2 cm long; estriate. Leaves cauline; spiral. Leaf-sheaths 0.4–0.5 cm long; longer than adjacent culm internode; as wide as blade at the collar. Ligule a fringe of hairs; 0.2 mm long. Leaf-blades deciduous at the ligule; lanceolate; 0.9–1.25 cm long; 1.3 mm wide; coriaceous; stiff. Leaf-blade venation with 7–9 subepidermal sclerenchyma strands. Leaf-blade surface ribbed; glabrous. Leaf-blade margins smooth, or scaberulous; ciliate; hairy at base. Leaf-blade apex attenuate; pungent; hardened.

INFLORESCENCE Inflorescence a panicle. Peduncle glandular.

Panicle contracted; oblong; 1 cm long; 0.3–1 cm wide. Primary panicle branches 0.2–0.5 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.1–0.8 mm long.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 0.5–1 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma. Lower glume ovate; 0.5–1 mm long; 1 length of upper glume; membranous, or scarious; 1-keeled; 1(–2) -veined. Lower glume lateral veins absent. Lower glume apex truncate, or obtuse; muticous, or mucronate. Upper glume ovate; 0.5–1 mm long; 1 length of adjacent fertile lemma; membranous, or scarious; 1-keeled; 1 -veined. Upper glume primary vein conspicuous. Upper glume lateral veins absent. Upper glume apex truncate, or obtuse; muticous, or mucronate.

FLORETS Fertile lemma oblong, or ovate; 0.5–1 mm long; hyaline; keeled; 5–7 -veined. Lemma lateral veins ribbed. Lemma apex emarginate to obtuse. Palea oblong; hyaline; 6 -veined; 2-keeled. Palea keels thickened. Palea apex divided to base; 2 -fid.

FLOWER Lodicules absent. Anthers 2; 0.8 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 0.5–0.6 mm long; striate.

DISTRIBUTION Australasia: Australia.

NOTES Micraireae. Lazarides.

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