Calamus ruvidus Becc., Rec. Bot. Surv. India 2: 202 (1902)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Borneo present (World Checklist of Arecaceae)B
Known from a single collection. Elsewhere in Sarawak. Endemic to Borneo. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Discussion

  • A poorly known species. See notes under C. muricatus. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Etymology

  • Latinization of ruvido (Italian) rough or coarse (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Uses

  • The cane appears to be of good quality. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Description

  • Solitary or clustering rattan climbing to 25 m; stem without sheaths to 15 mm diam., with sheaths to 25 mm diam., internodes 15-25 cm long. Sheaths dark green armed with triangular spines with swollen decurrent bases and very low ridges, indumentum abundant between the spines, sheath drying dull blackish-brown beneath the indumentum; knee conspicuous; ocrea membranous, soon tattering. Flagellum to 2.5 m. Leaf ecirrate, conspicuously curved, to 80 cm; petiole to 15 cm in juveniles, very short or absent at maturity; leaflets to c. 20 on each side of the rachis, regularly arranged, lanceolate, rather distant, the basalmost held across the stem, the longest to 35 × 4 cm; apical pair joined for c. 1/4 their length, leaflets drying dull green, transverse veinlets obscure. Inflorescences c. 2 m long with up to 5 partial inflorescences; partial inflorescences rather diffuse; bracts subtending rachillae minutely roughened; male rachillae 20-50 × 1.5 mm bearing strictly distichous flowers; female rachillae 30-80 × 3 mm bearing strictly distichous flowers. Young fruit rounded, covered in 16 vertical rows of dull brown scales. Seedling leaf not known. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Materials Examined

  • Without prov.: BRUN 15066. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Bibliography

    A. J. Dransfield, The Rattans of Brunei Darussalam. 1997
    B. World Checklist of Arecaceae