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Descriptions

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

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

Schizostachyum dullooa

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect, or leaning, or scandent; 600–900 cm long; 25–75 mm diam.; woody. Culm-internodes terete; hollow; 40–75 cm long; dark green. Lateral branches dendroid. Culm-sheaths 12–30 cm long; 1.2 times as long as wide; pubescent; with appressed hairs; with white hairs; truncate at apex. Culm-sheath ligule fimbriate. Culm-sheath blade linear; reflexed; 7.5–15 cm long; 8–18 mm wide; pubescent. Leaf-sheaths striately veined; outer margin hairy. Leaf-sheath oral hairs scanty; deciduous. Ligule a ciliate membrane. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.5–1 cm long. Leaf-blades lanceolate, or oblong; 10–20 cm long; 20–25 mm wide. Leaf-blade midrib evident. Leaf-blade venation with 12–20 secondary veins; without cross veins. Leaf-blade surface scabrous; rough adaxially; glabrous, or puberulous; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate; antrorsely scabrous.

INFLORESCENCE Synflorescence bractiferous; linear; with spathaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 20–25 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes several; 2–4 empty glumes; persistent; shorter than spikelet. Upper glume ovate; chartaceous; without keels. Upper glume apex acute.

FLORETS Fertile lemma oblong; 17–20 mm long; chartaceous; without keel; 8–10 -veined. Lemma surface pilose. Lemma apex acute; mucronate. Palea chartaceous.

FLOWER Lodicules 3. Anthers 6; 9 mm long; anther tip smooth. Stigmas 3; red. Ovary with a steeple-like appendage; glabrous.

FRUIT Caryopsis with free brittle pericarp.

DISTRIBUTION Asia-tropical: India and Indo-China.

NOTES Bambuseae. Gamble 1996.

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