Gelidocalamus annulatus T. H. Wen

Culms 1–2.5 m, 1–1.5 cm in diam.; internodes 20–30 cm, slightly flexuose, initially pubescent, later papillose; nodes prominent, sheath ring glabrous. Culm sheaths white spotted, sparsely setose, margins smooth, glabrous; ligule truncate, ca. 1 mm, scabrid, ciliolate; blade erect, narrowly triangular. Leaves 1 or 2 per ultimate branch; sheath sparsely golden setose, margins golden ciliolate; auricles absent or weak with a few, erect oral setae; ligule truncate, ca. 1 mm, scabrous; blade broadly lanceolate or oblong, 16–27 × 1.7–3.5 cm, glabrous or abaxially roughly hairy at base of midrib, secondary veins 5- or 6-paired, asymmetrical. Inflorescence unknown.

* N Guizhou.