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 lazaridis

HABIT Perennial; mat forming. Culms prostrate; 3–11 cm long; 0.4–0.6 mm diam.; rooting from lower nodes. Culm-internodes 1–1.5 cm long; brown; estriate; smooth. Lateral branches ample. Leaves cauline (in a whorl around panicle); spiral. Leaf-sheaths 0.8–1(–1.6) 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 1.8–2.7 cm long; 0.3–0.4 mm wide; stiff. Leaf-blade midrib keeled beneath. Leaf-blade venation with 2 secondary veins. Leaf-blade surface papillose; rough adaxially; pilose; sparsely hairy. Leaf-blade margins cartilaginous. Leaf-blade apex obtuse.

INFLORESCENCE Inflorescence a panicle; comprising 5–6 fertile spikelets; subtended by an unspecialized leaf-sheath and bracts (a whorl of leaves, and a bract 1.5mm long); enclosed. Peduncle brief, the infloresence subsessile.

Panicle capitate; oblong; 1.6–2 cm long; bearing few spikelets.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 1–1.4 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 ovate; 1 mm long; 1 length of upper glume; membranous; much thinner on margins; 1–3 -veined. Lower glume lateral veins absent, or obscure. Lower glume surface glabrous. Lower glume margins ciliate. Lower glume apex emarginate. Upper glume ovate; 1–1.4 mm long; 3 length of adjacent fertile lemma; membranous; with hyaline margins; 1–3 -veined. Upper glume lateral veins absent, or obscure. Upper glume surface glabrous. Upper glume margins ciliate. Upper glume apex emarginate.

FLORETS Fertile lemma ovate; 0.33–0.5 mm long; hyaline; 1 -veined. Lemma apex truncate. Palea 0.3–0.5 mm long; hyaline; 2 -veined.

FLOWER Lodicules absent. Anthers 2; 0.9–1.1 mm long; yellow. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 0.4 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Micraireae. Clark et al 2002.

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