1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus leptospadix Griff.

        This species is accepted, and its native range is E. Nepal to N. Myanmar.

    [PW]
    General Description
    A slender cluster forming climber; stem thickened at joints, with lead-sheaths 12-20 mm in diameter, naked stem smooth, 8 -10 mm in diameter at the internodes. Leaves ecirrate, delicate looking, 80-105 cm long; leafsheath with flagellum, thickly scurfy outside, armed with flattened, 15-20 mm long, subulate, half-whorled spines; ocrea persistent, prickly at margins; flagellum filiform with non-spinous base; armed distally with small, delicate claws; petiole terete; petiole and rachis armed with deflexed spines and claws; rachis delicate angular, covered thickly with greyish indumentum; leaflets closely placed, linear-ensiform, alternate to sub-opposite, to 30 cm long, distinctly 3-nerved, attenuate at base; acuminate to bristly subulate at apex; uppermost leaflets shorter. Male inflorescence flagelliform, decompound; male rachillae scorpioid, 1 -2cm long, with 6-12 closely set bifarious flowers. Male flowers 4-4.5 X 1.5 mm; calyx tubular, campanulate, divided up to middle into apiculate lobes; corolla double the length of calyx into 3 oblong segments. Female inflorescence similar to male; female rachillae erect from base, arching above, 1.5 - 2 cm long; each with 5-8 female flowers. Fruit globose, 1.5 mm in diameter, mamil-late; fruit scales yellow with reddish brown margins, channelled at middle; seed globose, endosperm homogeneous.
    Vernacular
    Dhangri bet, Rab bet, Rani bet, Mugri bet.
    Distribution
    INDIA (West Bengal, Sikkim, Meghalaya, Assam, Manipur, Nagaland, Arunachal Pradesh), BHUTAN.
    Biology
    Mostly on damp river plains, and forming big thickets. It becomes a cluster forming high climber when it grows in moist valleys among tall trees.
    [PW]
    Use
    Cane is thin and delicate therefore used mainly for making rough baskets. Split canes are durable and used for making chair bottoms.

    Images

    Distribution

    Native to:

    Assam, Bangladesh, East Himalaya, Myanmar, Nepal

    Calamus leptospadix Griff. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 1992 Thompson [s.n.E49], India K000521990
    Feb 1, 1992 Thompson [s.n.E52], India K000521987
    Feb 1, 1992 unknown [2407A], India K000521981
    Feb 1, 1992 Gamble [6666A], India K000521986
    Feb 1, 1992 Gamble [2974A], India K000521980
    Feb 1, 1992 Gamble [6666B], India K000521982
    Feb 1, 1992 Hooker and Thompson [s.n.E51], India K000521985
    Feb 1, 1992 Hooker and Thompson [s.n.E53], India K000521988
    Feb 1, 1992 Dr Treutler [s.n.E50], India K000521989
    unknown [s.n.E57], India K000521995
    Griffith [s.n.], Sikkim K000521991 isotype
    Cooke, A. [163], India K000521983
    Cooke, A. [163], India K000521984
    Watt, G. [7459], India K000522421
    Hooker and Thompson [s.n.E54], India K000521992
    Hooker and Thompson [s.n.E55], India K000521994
    Hooker and Thompson [s.n.E56], India K000521993

    First published in Calcutta J. Nat. Hist. 5: 49 (1845)

    Accepted by

    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.
    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Palmweb - Palms of the World Online
    • S.K. Basu, Rattans (canes) in India. A Monographic Revision. 1992
    Kew Backbone Distributions
    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.

    Sources

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Palmweb - Palms of the World Online
    Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
    Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0