Culms 3–4 m, 1–2 cm in diam.; internodes cylindrical but slightly concave at base above branches, 21–22 cm, initially green and densely glaucous, becoming dark green or yellow-green with persistent dark powder, deciduously setose; wall ca. 6 mm thick, pith lamellate; nodes slightly prominent. Culm sheaths gradually deciduous, green, about as long as internodes or slightly longer, leathery, sparsely setose, margins withered; auricles absent or small and circular; oral setae few, readily deciduous, erect; ligule truncate or arcuate, ca. 2 mm, glaucous, initially ciliolate; blade deflexed or reflexed, shortly triangular, base slightly constricted, apex acuminate. Leaves 3 or 4(–8) per ultimate branch; sheath densely deciduously setose; auricles readily deciduous, falcate; oral setae radiate, purple, ca. 3 mm; ligule prominent, ca. 5 mm; blade lanceolate, 10–23 × (1–)2.5–3.3 cm, secondary veins 7- or 8-paired, abaxially yellow-green and white tomentellate, adaxially light green and glabrous, base asymmetrically cuneate, margins serrulate. Inflorescence unknown. New shoots mid to late May.

The generic placement of this species is rather uncertain as its flowers and branching have not been described. It is similar to Acido-sasa notata and species of Pseudosasa and might be better included within P. maculifera.

The shoots are edible, and the culms are used for handicrafts and umbrella handles.

* Near streams, roadsides in secondary hardwood forests; 400–800 m. Zhejiang.