A new species of Calamus (Arecaceae) from Eastern Himalaya, India

Abstract

Calamus mahanandensis S. Mondal, S. K. Basu et M. Chowdhury (Arecaceae), a new species that differs from the similar indigenous species C. leptospadix and South-East Asian species C. tetradactyloides (Vietnam, Hainan) by its height, pinnae numbers, dense unique tomentose bristly spines located at leaf sheath, ocrea and knee base only; straight, glabrous rachis spines; partial male and female inflorescence sizes, bracts sizes, rachillae characters; beaked fruits with reddish-brown scales in 20–21 vertical rows with prominent brown margin is described here with illustrations.

Keywords

• new taxa
• rattans
• riverine habitat