Calamus insignis var. robustus (Becc.) J.Dransf., Malaysian Forester 41: 342 (1978)

Distribution

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

Malaya present (World Checklist of Arecaceae)B

Thailand present (World Checklist of Arecaceae)B

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

This variety which seems to be distinct, is only known from a few collections from Perak. The specimen collected by Ridley from Johore quoted by Furtado, is in my opinion a well-grown plant of C. insignis var. insignis. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

As for C. insignis var. insignis. (Dransfield, J. 1979: A Manual of the rattans of the Malay Peninsula. Malayan Forest Recirds 29.)A

Differs from var. insignis in the larger size of all parts and the remarkable large upward pointing spines on the leaf sheath. Stem without sheaths to 8 mm with to 2 cm. Sheaths dull green rather densely armed with upward pointing spines to 1 cm in length, without bulbous bases. Leaf to 1.2 m long with 5 pairs of dark green leaflets, the terminal pair usually joined along Vi their length; longest leaflet to 45 cm long by 1 cm wide, cucullate, with rather fine lateral veins. (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