GrassBase - The Online World Grass Flora

Descriptions

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

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

Cephalostachyum mishimianum

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms 700 cm long; 48 mm diam.; woody. Culm-internodes terete; hollow; 60–80 cm long; dark green. Culm-nodes swollen; brown. Lateral branches dendroid. Bud complement 1. Branch complement many; with 1 branch dominant. Culm-sheaths 35–45 cm long; 1.5 times as long as wide; pilose; with tawny hairs; concave at apex. Culm-sheath ligule fimbriate. Culm-sheath blade lanceolate; reflexed; 48 cm long; 25 mm wide; pubescent. Leaf-sheaths 4–8 cm long; glabrous on surface; outer margin hairy. Ligule an eciliate membrane; brown. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.5 cm long. Leaf-blades lanceolate, or ovate; 10–25 cm long; 15–40 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation with 14–16 secondary veins. Leaf-blade surface glabrous. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; globose; 1.5–4 cm long; dense; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 2–3(–4) fertile florets. Spikelets oblong; laterally compressed; 15–20 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1–2 mm long; glabrous, or sparsely hairy.

GLUMES Glumes persistent; shorter than spikelet. Lower glume ovate; 10.5–11 mm long; 1 length of upper glume; 1-keeled; winged on keel; 3 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex mucronate. Upper glume ovate; 10.5–11 mm long; chartaceous; 1-keeled; winged on keel; 3 -veined. Upper glume surface scabrous; rough on veins. Upper glume margins scabrous. Upper glume mucronate.

FLORETS Fertile lemma orbicular; 10–12 mm long; chartaceous; without keel. Lemma surface puberulous. Lemma margins convolute; covering most of palea. Lemma apex mucronate. Palea lanceolate, or ovate; 1 length of lemma; chartaceous; 1–7 -veined; without keels.

DISTRIBUTION Asia-tropical: India.

NOTES Bambuseae. Naithani 2014.

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