三月竹 san yue zhu

Oreocalamus opienensis Hsueh & T. P. Yi, J. Nanjing Univ. Nat. Sci. Ed. 22(3): 416. 1986; Chimonobambusa maculata (T. H. Wen) T. H. Wen; Qiongzhuea maculata T. H. Wen; Q. opienensis (Hsueh & T. P. Yi) D. Z. Li & Hsueh.

Culms 2–7 m, 1–5.5 cm in diam.; internodes slightly 4-angled or terete, 18–20(–25) cm, glabrous; wall 5–8 mm; distal nodes 2- or 3-branched, with conspicuously raised ridge. Culm sheaths deciduous, oblong-triangular, thickly papery or leathery, sparsely setose, upper margins densely yellow ciliate, apex arched; auricles absent; ligules rounded, ca. 1 mm, glabrous; blade triangular, 4–6 mm. Leaves (1 or)2 per ultimate branch; sheaths 2.5–4 cm; auricles absent; oral setae 2–4, 4–7 mm; ligule short when leaf solitary, ca. 0.5 mm when 2-leaved; blade lanceolate, 7.5–17 × 1–1.6 cm, glabrous. Inflorescence unknown. New shoots Apr–May; shoots purplish black.

* Broad-leaved forests; 1600–1900 m. Sichuan (Ebian).

This species was first described as "Qiongzhuea opienensis" by Hsueh and Yi (Acta Bot. Yunnan. 2: 98. 1980), but that name was not validly published.