Indocalamus inaequilaterus W. T. Lin & Z. M. Wu

This species is known only from the type. The authors compared it with Indocalamus hirtivaginatus, which differs by having the culm sheaths longer than the corresponding nodes and without distinct transverse venation.

Culms 1–1.2 m, 0.6–0.9 cm in diam.; internodes terete, 25–33 cm, densely pubescent, densely hispid below nodes; wall 2–3 mm thick; sheath scar slightly raised. Branches often 1 per node. Culm sheaths persistent, 14–16 cm, abaxially sparsely white tuberculate-hispid, transverse veins often distinct distally; auricles absent; oral setae absent or few, erect, hirsute; ligule ca. 1 mm; blade spreading or reflexed, lanceolate, 1.4–2.4 cm, base ca. 1/3 as wide as sheath apex. Leaves 4 or 5 per ultimate branch; sheath sparsely ± hirsute, keeled toward apex; auricles absent; oral setae few or absent; ligule ca. 1 mm; blade oblong-ovate, 14–28 × 3.5–6.5 cm, both surfaces glabrous, secondary veins 9–12 pairs, tessellations conspicuous, apex caudate. Inflorescence unknown.

* Guangdong (Fengkai).