Calamus perakensis var. crassus J.Dransf., Malaysian Forester 41: 336 (1978)

Distribution

Map uses TDWG level 3 distributions (https://github.com/tdwg/wgsrpd)

Malaya present (World Checklist of Arecaceae)B

Trengganu: endemic. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

"Rotan tekok gunung" is known only from hillslopes from 100-500 m alt. in Diptero-carp forest in Trengganu. It is distinguished from other varieties of C. perakensis by the presence of the greatly expanded inflorescence bract limbs, the rather thick female rachillae and the sparse cinnamon brown indumentum. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

rotan tekokgunung (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

Can be used for making walking sticks. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

Solitary erect short-stemmed rattan with stems rarely exceeding 2 m tall. Stem without sheaths to 2.5 cm in diameter with very prominent nodes, and internodes to 3 cm only. Stem with sheaths to 4 cm in diameter. Sheaths dull green armed with scattered brown erect spines of length varying from 1-4.5 cm, slightly less armed at base of petiole; spines around leaf sheath mouth occasionally conspicuously longer, and erect, brownish; brown indumentum abundant between spines. Knee absent. Flagellum absent. Leaf ecirrate to 3 m tall, with petiole to 2 m armed with pale green spines. Leaflets regular, about 40 on each side of rachis the longest to 40 cm long by 2.5 cm wide conspicuously 3 nerved, armed with sparse bristles on margins and upper surface of nerves, conspicuously and rather densely armed with bristles along 3 nerves near the tip on the undersurface. Uppermost leaflets not strongly divergent. Inflorescences, male much more highly branched than female, to 1.5 m long, with peduncular portion densely spiny, to 60 cm long. Partial inflorescences to 3, rarely more. Bracts large, with tattered limb to 40 cm long by 8 cm wide, very sparsely armed; male rachillae to 1 cm long, female to 10 cm. ± mature fruit rounded c 6 mm in diameter very conspicuously beaked, covered in 17 vertical rows of pale brown scales. Seed rounded; endosperm homogeneous. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

A. Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.

B. World Checklist of Arecaceae