Shrubby to arborescent bamboos. Rhizomes leptomorph, with running underground stems. Culms diffuse, erect; internodes terete, weakly grooved basally above branches, cavity with spongy pith; nodes weakly prominent. Branch complement 3 at mid-culm nodes, 3–5 at distal nodes. Culm sheaths deciduous, sparsely setose; auricles small or absent, with or without oral setae; blade lanceolate or triangular. Leaves usually medium-sized; auricles small or absent; blade with many secondary veins, transverse veins distinct. Inflorescence ebracteate, semelauctant, a terminal raceme or racemose panicle. Spikelets robust, several to many flowered, long pedicellate. Glumes 2–4; lemma large, many veined, apex acuminate or shortly mucronate. Palea usually shorter than lemma, 2-keeled, veined between keels. Lodicules 3, membranous, usually transparent at margin. Stamens 6; filaments free; anthers yellow. Ovary appendage inconspicuous; style 1; stigmas 3, plumose. New shoots spring–early summer, fl. summer–autumn.
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