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Plants shrub-like, in dense spreading clumps; rhizomes leptomorph. Culms to 6(–10) m, self-supporting, diffuse to pluricespitose, drooping; internodes shallowly grooved above branches, rough; nodes not swollen, the supranodal ridge well-developed. Branches erect, initially 3–7, central and laterals subequal, basal nodes fully compressed, fully sheathed; sheaths and prophylls large, tough, very persistent; buds at mid-culm open at front, prophylls 2-keeled, keels densely brown-pubescent, 2 initials visible within. Culm sheaths tough, usually promptly deciduous; blades deciduous, small, articulating, lanceolate, erect or reflexed. Leaf sheaths persistent; blades thick with prominently tessellate venation. Synflorescence semelauctant, ebracteate, branching open, paniculate, erect to deflexed, pubescent. Spikelets narrow, with several to many florets; glumes basally tight, without subtended buds; lemmas mucronate; paleas not exceeding the lemmas, 2-keeled; stamens 3; style with 2–3 plumose branches. Name from Ba Shan, a mountain in Yunnan, China.
Bashania is a temperate genus of 2 species from W China, rather similar in vegetative characters to Semiarundinaria and in synflorescence to Indocalamus, but with rougher culms than the former and more branches than the latter.
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