Description from Flora of China
Calamus guangxiensis C. F. Wei; C. yuangchunensis C. F. Wei.
Stems clustered, non-climbing, free standing or creeping, to 4 m, to 7 cm in diam. Leaf sheaths yellowish brown with brown hairs, with short, oblique rows of yellowish, flattened spines to 3 cm; ocreas present, to 20 cm, fibrous; knees absent; flagella absent; rachis to 3 m with up to 30 linear-lanceolate pinnae per side, these regularly arranged; middle pinnae 50-60 cm, 2.5-4 cm wide at mid-point, adaxial veins and margins bristly; cirri absent. Inflorescences to 1 m, not flagellate; inflorescence bracts split open and tattering at apices. Fruits brownish, globose to ellipsoid, to 2 × 1.5 cm, scales grooved.
● Lowland rain forests. Guangdong, Guangxi.