Calamus guruba Buch.-Ham. ex Mart., Hist. Nat. Palm. 3: 211 1838. (syn: Calamus mastersianus Griff.; Daemonorops guruba (Buch.-Ham. ex Mart.) Mart.; Daemonorops guruba var. hamiltonianus Mart.; Daemonorops guruba var. mastersianus (Griff.) Mart.; Palmijuncus guruba (Buch.-Ham. ex Mart.) Kuntze);
NE. India to Bangladesh: Assam, Bangladesh, East Himalaya, India as per POWO;
Stems: Climbing / Forming thickets. Length-20 cm and Diameter-3 cm. Leaf sheaths: Dull green with light brown hairs or rusty brown hairs, with spines which are dark brown in color which are scattered to densely arrangedd, upward-pointing upto 3.5 cm (sometimes reaching even upto 10 cm at sheath apices), ochreas are conspicuous, small in size and are soon falling. The knees are present, flagella is upto 3 m, rachis is upto 1.3 m with 30-65 linear-lanceolate pinnae per side, these are regularly arranged, the middle pinnae is 25–45 cm in size, the apical ones are smaller than others, at the mid-point their size ranges from 1.7–2.2 cm, the abaxial and adaxial veins are bristly and cirri are absent. The inflorescens are flagellate and grow upto 3 m. The inflorescence bracts are not sheathing, brown, they split open and are flat. The fruits are globose, brown or yellowish brown and 0.8 cm in diameter.
(Attributions- Compiled from secondary sources listed in references by Keerthi Krutha for the Assam Biodiversity Portal Project as per India Biodiversity Portal)
MS, July, 2021/06 Calamus sp. for id.: 3 images.
Location : Lungkulh, Mizoram
not sure but looks like Calamus guruba
References: POWO Catalogue of Life The Plant List Ver.1.1 WCSP IPNI GBIF (High resolution specimens) Flora of China Flora of peninsular India India Biodiversity Portal Assessment of genetic diversity in natural populations of Calamus guruba Buch.-Ham. ex Mart. using ISSR marker- August 2018 Tropical Plant Research 5(2):250-259