Momang Tali, Chaman Lal Sharma, Madhubala Sharma and Mahesh Wangkhem

Wood Science and Forest Product Laboratory, Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli – 791 109

The study was conducted on eleven Calamus species viz., C. acanthospathus, C. erectus, C. flagellum, C. floribundus, C. gracilis, C. inermis, C. khasianus, C. latifolius, C. leptospadix, C. nambariensis and C. nambariensis subsp. arunacha­lensis collected from three districts of Arunachal Pradesh with an aim to investigate their anatomical characteristics. Five matured stems of each species were randomly collected and anatomical characteristics were studied at bottom, middle and top positions of the stems. Lumina shape was rectangular in C. acanthospathus, tubular in C. floribundus and C. nambariensis subsp. arunachalensis, irregular in C. erectus and C. flagellum, drop shape in C. gracilis, C. leptospadix and C. nambariensis, club shape in C. inermis, conical in C khasianus and conical and rectangular in C. latifolius. Type-b vascular bundles in C. acanthospathus, C. floribundus, C. gracilis, C. inermis, C. latifolius and C. nambariensis; Type-b and c vascular bundles in C. nambariensis subsp. arunachalensis; Type-b and d vascular bundles in C. erectus and C. khasianus; Type-d vascular bundles in C. flagellum and C. leptospadix were observed. Parenchyma was Type-A in C. acanthospathus, C. erectus, C. flagellum, C. gracilis, C. inermis, C. khasianus, C. latifolius and C. nambariensis; Type- B in C. floribundus, C. leptospadix and C. nambariensis subsp. arunachalensis. Parenchyma and fibre percentage were highest in C. flagellum and C. nambariensis respectively. Vessel percentage was highest in C. acanthospathus. All the anatomical characteristics exhibited significant variations within and among selected species and can be used for identi­fication of the Calamus species.

Details available in https://doi.org/10.1007/s13196-024-00343-4