1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus metzianus Schltdl.

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

    [PW]
    General Description
    A slender climber; stem cluster forming, with leafsheath about 2 cm in diameter; leafsheath with flagellum, armed with irregularly spaced triangular, 1 -2 cm long spines and much shorter spinules. Leaves ecirrate; 1 m or more long; leaflets linear-lanceolate, tapering at base, equidistant on rachis; lower leaflets 25-27 cm long, 15 mm broad at middle; each gradually tapering into a slender point, prominently 3-nerved; midnerve strongly spinulose on both sides from middle upwards; lateral nerves smooth; margins slightly bristly; petiole armed with straight, black-tipped spines. Female inflorescence flagelliform; primary bract narrow, closely sheathing, obliquely truncate at apex, armed with numerous claws; axial part of inflorescence flat on one side and convex on the other, armed with clusters of black claws; partial inflorescence 60 - 80 cm long, attached to distinct cushion above the mouth of the respective secondary bracts; rachillae mostly 10 - 15 in number, 6 - 9 cm long, arching or recurved on outer side, attached just above the mouth of the respective basal bract; lower-most rachilla longest with 8 - 9 flowers on each side; involucrophorum non pedicelliform; female flowers about 3 mm long, almost immersed in its own bract, attached at the base of one above; involucre cup-like. Male inflorescence flagelliform; partial inflorescences simple; male rachillae alternate, simple arcuate. Fruits broadly ovoid to oblong, abruptly contracted into a 3 mm long beak, 1.7x 1.1 cm; fruiting perianth flattened; fruit scales in 17 longitudinal series, light yellow in colour, minute, distinctly channelled at middle with erosely toothed margins; seed ovoid, compressed, solitary, 9x7 mm, smooth.
    Biology
    Infrequent in moist deciduous forests of the Western Ghats.
    Distribution
    INDIA (Tamil Nadu, Kerala, Karnataka). Endemic.
    Vernacular
    Cheria-chural. Olianchural.
    [PW]
    Use
    It is one of the small diameter canes of South India but unlike others its cane is very weak and breaks easily and is therefore unsuitable for basket making. It has some local uses. Bhat and Tulsidas( 1989) observed that the stem of this species has a low specific gravity and a low percentage of fibre in the cane.

    Images

    Distribution

    Native to:

    India, Sri Lanka

    Calamus metzianus Schltdl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Thwaites, G.H.K [s.n.], Sri Lanka Calamus rivalis K000208180 holotype
    Thwaites, G.H.K [s.n.], Sri Lanka Calamus rivalis K000208181 holotype

    First published in Linnaea 26: 727 (1855)

    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