Bambusa basihirsuta

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 700–1200 cm long; 60–90 mm diam.; woody; without nodal roots. Culm-internodes terete; hollow; 35 cm long. Culm-nodes glabrous. Lateral branches dendroid. Culm-sheaths deciduous; coriaceous; pilose; glabrous on margins; without auricles. Culm-sheath ligule 1.5 mm high; ciliolate. Culm-sheath blade triangular; erect; glabrous on surface and with ciliate margins. Leaves cauline; 6–8 per branch. Leaf-sheaths 8–9 cm long; glabrous on surface, or hispid. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane; scaberulous on abaxial surface; truncate. Collar with external ligule. Leaf-blade base broadly rounded, or cordate; with a brief petiole-like connection to sheath. Leaf-blades oblong; 18–25 cm long; 30–50 mm wide. Leaf-blade venation with 14–20 secondary veins; without cross veins. Leaf-blade surface glabrous. Leaf-blade apex acute.

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 5–7 fertile florets; with diminished florets at the apex. Spikelets linear, or lanceolate; laterally compressed; 24 mm long; 7 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.

GLUMES Glumes one the lower absent or obscure, or two.

FLORETS Fertile lemma ovate; 16 mm long; 10 mm wide; without keel; 27–31 -veined. Palea 14 mm long; 11 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; membranous; ciliate. Anthers 6; 7 mm long. Stigmas 2–3.

DISTRIBUTION Asia-temperate: China.

NOTES Bambuseae. Wen 2002.

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