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.

Dendrocalamus somdevae

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 1200–2000 cm long; 60–70 mm diam.; woody. Culm-internodes terete; 15–40 cm long; distally pubescent. Culm-nodes swollen. Lateral branches dendroid. Culm-sheaths 20–75 cm long; 2 times as long as wide; coriaceous; glabrous, or hispid; with dark brown hairs; convex at apex. Culm-sheath ligule 7–12 mm high; lacerate. Culm-sheath blade triangular; 2.5–4 cm long; 15–80 mm wide; pubescent (at base); acuminate. Leaf-sheaths striately veined. Leaf-sheath oral hairs setose; deciduous. Ligule an eciliate membrane; 1 mm long; erose. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.3 cm long. Leaf-blades lanceolate; 20–30 cm long; 20–40 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 12–20 secondary veins. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in globose clusters; 1–2.5 cm long; dense; 2.5 cm between clusters; scabrid on internodes; 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 3–4 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 10 mm long; 5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.

GLUMES Glumes one the upper absent or obscure, or two; persistent; similar; shorter than spikelet. Lower glume ovate; 4 mm long. Lower glume apex acute. Upper glume ovate; 4 mm long; chartaceous; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma orbicular; 7–8 mm long; chartaceous; without keel. Lemma lateral veins without cross-veins, or transversely connected at apex. Lemma surface glabrous. Lemma margins ciliate. Lemma apex acute; muticous, or mucronate (uppermost floret). Palea 1 length of lemma; chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliate. Palea surface pilose; hairy on margins.

FLOWER Lodicules absent. Anthers 6; yellow; anther tip apiculate. Filaments united in a tube. Stigmas 1. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: India.

NOTES Bambuseae. Seeth. & Kumar 2002.

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