Dendrocalamopsis Q. H. Dai et X. L. Tao

Abstract

Arborescent bamboos. Rhizomes sympodium. Culms large, caespitose, apex a little arched to drooping; internodes terete, culm-walls thick; sheath nodes prominent; culm-nodes flat. Bud solitary, large, appressed to culms; branches many, clustered, dominant branches strong. Culm-sheaths leathery or cartilaginous, early deciduous to tardily deciduous, apex truncate or shoulders broad; auricles conspicuous; blades usually erect, or reflexed, the base 1/2 (seldom 1/3) as wide as the apex of culm-sheaths. Many leaves per branchlet; leaves large, but with small leaves in the same branchlet, transverse veins inconspicuous. Pseudospikelets solitary or several clustered on the node, short, terete or flat, apex acute; bracts 1–5, with buds, upper one or two bracts without buds; 5–12 florets for each pseudospikelet, clustered densely, the top floret usually sterile; internodes of rachilla short, tough, not disarticulated, the whole pseudospikelet deciduous when mature; glumes 1–2; lemma many veins, apex tapering; palea narrower than lemma, 2-keeled, ciliate, margins with cilia; lodicules 3, ovate-lanceolate, the base with veins, margins ciliate; stamens 6, filaments free, anther septum prominent as a cusp, hispid; ovary with dense bristles, 3 vascular bundles on the transverse section of ovary, style 1, seldom 2, stigmas 3, seldom 2 or 1, plumose. Caryopses. New shoots in autumn.