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Descriptions

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

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

Bambusa wenchouensis

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 1600 cm long; 80–100 mm diam.; woody; without nodal roots. Culm-internodes terete; 37–50 cm long; distally pubescent. Culm-nodes flush with internodes; pubescent. Lateral branches dendroid. Culm-sheaths deciduous; 20–25 cm long; 1 times as long as wide; coriaceous; glaucous; pubescent; with appressed hairs; with black hairs; concave at apex; without auricles; ciliate on shoulders. Culm-sheath blade lanceolate; reflexed; pubescent. Leaves cauline; 7–12 per branch. Leaf-sheaths 4–4.5 cm long; glabrous on surface, or pubescent. Leaf-sheath oral hairs setose. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.2 cm long; petiole glabrous. Leaf-blades lanceolate, or oblong; 9–16 cm long; 12–20 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface puberulous; hairy abaxially. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

FERTILE SPIKELETS Spikelets comprising 9–13 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 33 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; glabrous.

GLUMES Glumes several; 2–4 empty glumes; persistent; shorter than spikelet.

FLORETS Fertile lemma ovate; 8 mm long; without keel; 13–15 -veined. Lemma apex acute. Palea 11 -veined. Palea keels pubescent. Palea surface glabrous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; membranous; veined; ciliate. Anthers 6. Stigmas 3; plumose. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China.

NOTES Bambuseae. Wen 2002.

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