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 pubiramea

HABIT Perennial. Rhizomes short; pachymorph. Culms scandent; zigzag; 29 mm diam.; woody. Culm-internodes terete; with small lumen; scaberulous. Culm-nodes swollen. Lateral branches dendroid. Leaf-sheaths keeled. Leaf-sheath oral hairs lacking. Ligule a ciliolate membrane. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.2–0.4 cm long. Leaf-blades lanceolate; 17–27 cm long; 20–50 mm wide. Leaf-blade venation with 26–28 secondary veins. Leaf-blade surface glabrous, or puberulous; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between branches.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes two; persistent; dissimilar; shorter than spikelet. Lower glume ovate; 1.5 mm long. Lower glume apex emarginate. Upper glume ovate; 2.5 mm long. Upper glume apex emarginate.

FLORETS Fertile lemma orbicular; 3 mm long; coriaceous; without keel; 7 -veined. Lemma apex acute. Palea involute; 2–3 mm long; coriaceous; without keels.

FLOWER Lodicules 3; 1 mm long; ciliate. Anthers 6; 1.5 mm long; anther tip with extended connective and pubescent. Stigmas 3. Ovary umbonate.

FRUIT Caryopsis with fleshy pericarp; orbicular; isodiametric. Endosperm evanescent.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Gamble 1996.

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