Calamus corrugatus Becc., Rec. Bot. Surv. India 2: 201 (1902)

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Known from a few collections from the 1st Division (G Pueh, G Matang, Bako, Sabal Tapang, Semengoh) and one collection from the Hose Mountains. Not known elsewhere. Endemic. (Dransfield, J. 1992: The Rattans of Sarawak)A


  • C. corrugatus is a very elegant species found in mixed dipterocarp forest and forest transitional to kerangas, from sea level to c. 900 m altitude. It is very easily identified by the neat, broad lanceolate leaflets and absence of petiole, together with the corrugated leaf sheath. (Dransfield, J. 1992: The Rattans of Sarawak)A


  • Corrugated (Dransfield, J. 1992: The Rattans of Sarawak)A


  • The cane appears to be of excellent quality. (Dransfield, J. 1992: The Rattans of Sarawak)A


  • Slender clustering rattan climbing to 15 m; stem without sheaths 2-4 mm diam., with sheaths to 5 mm diam., internodes to 12 cm long, usually less. Sheath dull brownish-green, reddish- tinged when young, unarmed but bearing rather regularly arranged low ridges, the sheath thus appearing corrugated', knee present; ocrea very short. Flagellum to c. 40 cm. Leaf ecirrate, to 35 cm long, but usually much shorter;petiole absent', rachis bearing rusty-red hairs; leaflets 4-8 on each side of the rachis, broadly lanceolate, acute or acuminate, usually strictly opposite, the basal 1 or 2 on each side smaller than the rest and swept back across the stem, the apical pair joined together for over half their length, the mid leaf leaflets to 13 x 2.5 cm, usually much less, transverse veinlets quite conspicuous; young leaf pinkish-tinged. Inflorescence without a terminal flagellum, to c. 90 cm, only the female known; partial inflorescences 2-3, borne towards the tip of the inflorescence; rachillae 3 - 5 cm long. Mature fruit ovoid, 10 x 7 mm, tipped with a conspicuous cylindrical beak to 2.5 mm; scales pale yellowish-brown, arranged in 14 vertical rows. Seed c. 8 x 4 mm, irregularly scalloped and faceted. Seedling leaf not known (Fig. 77). (Dransfield, J. 1992: The Rattans of Sarawak)A


    A. Dransfield, J. 1992: The Rattans of Sarawak