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.

Dinochloa matmat

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; zigzag; 6–20 mm diam.; woody. Culm-internodes terete; with small lumen, or solid; 15 cm long; distally pubescent. Lateral branches dendroid. Branch complement several; with 1 branch dominant; as thick as stem. Culm-sheaths 9–10 cm long; 2.5 times as long as wide; pubescent; with appressed hairs; with white hairs; without auricles. Culm-sheath ligule 1 mm high; entire. Culm-sheath blade lanceolate; erect; 1–4(–7.5) cm long; 3–7 mm wide; glabrous on surface; acuminate. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.7–1 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 9–19 cm long; 20–30 mm wide. Leaf-blade surface glabrous.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in compact unilateral clumps; dense; glabrous on internodes, or pubescent on internodes; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between branches; 60–75 cm long overall.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet. Lower glume orbicular; 2 length of upper glume; chartaceous; without keels. Lower glume apex obtuse. Upper glume oblate; 2.5 length of adjacent fertile lemma; chartaceous; without keels. Upper glume apex cuspidate.

FLORETS Fertile lemma orbicular; 3 mm long; coriaceous; without keel; 7 -veined. Lemma apex cuspidate. Palea orbicular; involute; 3 mm long; coriaceous; 6 -veined; without keels.

FLOWER Lodicules absent. Anthers 6; anther tip apiculate. Stigmas 3. Ovary glabrous.

FRUIT Caryopsis with fleshy pericarp; oblong; 6 mm long. Endosperm evanescent.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Dransfield & Widjaja 2002.

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