1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus pseudotenuis Becc.

        This species is accepted, and its native range is Sri Lanka.

    [PW]
    Biology
    Grows in the moist hill forests of Western Ghats up to 1500 m.
    General Description
    A slender to moderately robust climber; stem cluster forming with leafsheath 1.5 - 2.5 cm in diameter; exposed part of the stem smooth with internodes 20 - 35 cm or more long, 1 - 2 cm in diameter; leafsheath dull green in colour, armed with straight, subulate spines, 2 - 3 cm long, slightly bulbous at base; with deep brown scurf in between the spines; leafsheath flagellum to 3 m long; ocrea about 10 cm long, petiole up to 15 cm long in older leaves, armed with 3-4 cm long yellowish, straight spines; rachis armed on lower part with straight spines at or near the attachment of leaflets; dorsal part of rachis armed with strong claws; leaflets many, nearly regular, linear-lanceolate, attenuate at apical part; basal leaflets longest, to 45 cm long, 2 cm broad at middle with 3-distinctly bristly upper nerves. Male inflorescence flagelliform, highly branched; primary bracts tubular, armed with scattered, broad-based 5 - 9 mm long deflexed hooks; axial part of the inflorescence armed at intervals with paired, broad-based, 8 mm - 1 cm long spines; partial inflorescence twice or thrice branched; primary rachillae 12-15 cm long; secondary rachillaescorpioid bearing flowers in glomerules. Female inflorescence simply decompound; partial inflorescences attached at the mouth of the respective bracts, 90 cm -1.5 mm long with many slender, to 25 cm long rachillae on each side, attached at the mouth of the respective basal bracts. Fruits ovoid to sub-ovoid, abruptly conical and beaked, 10 mm x 7 mm, ascending from the rachilla; fruit scales straw yellow in colour with broad, very dark intermingled band, arranged in 18 longitudinal series without channelled at middle; fruiting perianth flattened.
    Distribution
    INDIA (Karnataka, Kerala, Tamil Nadu), SRI LANKA.
    [PW]
    Use
    The slender cane of this species is strong and used for making baskets etc.

    Images

    Distribution

    Native to:

    Sri Lanka

    Calamus pseudotenuis Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Thwaites, G.H.K [s.n.], Sri Lanka K000697993 holotype
    Thwaites, G.H.K [s.n.], Sri Lanka K000697994 holotype

    First published in J.D.Hooker, Fl. Brit. India 6: 445 (1892)

    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

    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