2. Acidosasa purpurea (Hsueh & T. P. Yi) P. C. Keng, J. Wuhan Bot. Res. 4: 335. 1985.
毛花酸竹 mao hua suan zhu
Indosasa purpurea Hsueh & T. P. Yi, Acta Phytotax. Sin 21: 94. 1983; Acidosasa dayongensis T. P. Yi.
Culms 3–10 m, 2–8 cm in diam.; internodes 30–45 cm, initially glabrous, glaucous below nodes; wall 4–10 mm thick, cavity with spongy pith; nodes prominent, sheath base initially setose. Culm sheaths unspotted, leathery, setose, transverse veins obscure, base densely setose, apex truncate; auricles and cilia absent; ligule arched or triangular, 2–6 mm, ciliolate; blade lanceolate, base narrower than sheath apex. Leaves 4–7 per ultimate branch; sheath glabrous; auricles and cilia absent; ligule strongly prominent, 1.5–4 mm; blade lanceolate, 12–21 × 1.6–2.6 cm, secondary veins 5–7-paired, transverse veins distinct, serrulate. Raceme terminal or lateral. Spikelets 1–5, purple, 4–9 × 0.3–0.7 cm, compressed; rachilla ca. 5 mm, densely hairy; florets 3–15; pedicel 1–3 cm, apically pubescent. Glumes densely hairy; lemma 1.3–2.1 cm, densely setose. Palea short, 7–15 mm, narrow, ciliolate, apex rounded. Lodicules lanceolate, 2–3 mm, glabrous. Anthers yellow, 3–4 mm. Style 3–4 mm; stigmas 3-cleft, plumose. New shoots Apr, fl. May–Sep.
* NW Guangxi, Hunan, Jiangxi, SE Yunnan.
The earlier but not validly published name "Acidosasa hirtiflora Z. P. Wang & G. H. Ye" was applied to this species in FRPS (9(1): 565. 1996).
The shoots are edible, although rather bitter, and the culms are used for weaving and fencing.