Calamus floribundus Griff., Calcutta J. Nat. Hist. 5: 56 (1845)

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Map uses TDWG level 3 distributions (
Assam present (World Checklist of Arecaceae)B
Bangladesh present (World Checklist of Arecaceae)B
East Himalaya present (World Checklist of Arecaceae)B
Myanmar present (World Checklist of Arecaceae)B
INDIA (Assam, Meghalaya, Arunachal Pradesh), BANGLADESH, BURMA. (Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision)A

Biology And Ecology

  • Grows in moist forests of the plains and lower hill valleys. (Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision)A


  • A strong climber; stem cluster-forming, with leafsheath to 3 cm in diameter. Leaves ecirrate; leafsheath armed with to 3 cm long, subulate, horizontal to deflexed spines, mostly scattered or seriate, intermingled with dark brown bulbous based bristles; petiole strongly armed at margins with to 4 cm long, straight rigid spines, horizontal or deflexed from petiole; flagellum armed with black tipped claws; leaflets not many, lanceolate, 3-5 nerved, to 50 cm long, 3 - 4 cm wide at middle; upper leaflets crowded; terminal leaflets conspicuously connate at base. Male inflorescence flagelliform, to 3 m long; partial inflorescences to 40 cm long, thrice branched; primary bracts tubular, 2-edged, armed with scattered straight spines; secondary bracts tubular, non spiny, with funnel-like opening; flower branches alternate, inserted at the mouth or just above the mnouth of the respective bracts, each holding alternate, to 2 cm long rachillae; male flowers distichous, ovoid, 3-4 mm long; calyx rounded, almost smooth at base with 3-acute lobes; corolla twice longer than calyx. Female partial inflorescences fewer in number, 15-30 cm long; base of the partial inflorescences inserted within the primary bracts; rachillae 4 - 8 in number on each side of the flower branch, 8 -12 cm long, slightly arched, zig-zag between the flowers; involucrophorum sub-cupular, acutely toothed on each side, almost exserted from own bract. Female flowers 4 mm long, ovoid, conic. Fruit almost globose, suddenly beaked to 10mm in diameter; fruit-scales in 15 series, obtuse, shining, superficially channelled at middle, straw yellow in colour; seed sub-orbicular. (Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision)A

Materials Examined

  • Arunachal Pradesh : Abor Expedition (1911-12), Makum, 21.11.1919, Burkhil 35743 (CAL); Pobomukh, 15.12.1911, Burkhil 37041 (CAL). (Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision)A


  • Not cultivated. (Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision)A


    A. Basu, S.K. 1992: Rattans (canes) in India. A Monographic Revision
    B. World Checklist of Arecaceae