Calamus henryanus Becc.

Stems clustered, climbing, to 20 m, to 1.8 cm in diam. Leaf sheaths with mottled, reddish brown hairs, with scattered, yellowish, flattened, triangular spines to 2 cm (sometimes a few spines to 7 cm at sheath apices); ocreas very short, sometimes spiny; knees present; flagella to 4 m; rachis to 1.3 m with 30-45 linear pinnae per side, these regularly arranged, or often regularly arranged but with gaps; middle pinnae 15-40 cm, 1.3-2 cm wide at mid-point, adaxial veins and margins bristly; cirri absent. Inflorescences to 4.5 m, flagellate; inflorescence bracts tattering at apices. Fruits yellowish brown, globose to ellipsoid, 1-1.5 × 0.7-1 cm.

A tropical plant. It grows below 1300 m altitude in Yunnan in China. It grows in monsoon forest. In Laos it grows between 450-1,300 m altitude. In Sichuan.

The fruit are eaten raw. The shoots are eaten as a potherb.