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

        This species is accepted, and its native range is Nicobar Islands (Great Nicobar).

    [PW]
    Distribution
    Evergreen forest. Great Nicobar. (Map. 7).
    Biology
    Flowering November - December. Fruiting April - May.
    General Description
    Clustering, large diameter rattan. Stem 20 m long or more, with sheaths to 4 cm in diameter, without sheaths 2 cm. Leaf to 6 m long, cirrate; sheath green, distal sheaths covered with white powder, densely armed with spines, spines 2-4 cm long, yellow with a reddish brown tinge, grouped together, arranged horizontally in slightly raised rims; knee present, not seen clearly from a distance because of dense spines,, petiole spiny, spines brownish yellow, grouped together, arranged horizontally in slightly raised rims; rachis stout, armed with 3 rows of spines, spines to 0.3 cm long, black, grouped together in slightly raised rims; leaflets ca. 50 x 2.5 cm, basal and distal ones smaller, veins and margins sparsely ciliate. Inflorescence not flagellate; male inflorescence, primary sheath lacerate, spiny; spines black, 1 cm long; partial inflorescences to 18 cm long; secondary sheath splits open, not spiny; rachilla 4 cm long, flowers in distichous rows; female inflorescence, primary sheath to 2.5 cm long, spiny, splitting open, slightly prolonged at the distal end into a lanceolate point: partial inflorescence to 25 cm Ipng; secondary sheaths splits open, not spiny, 1 cm long, prolonged at the distal end into a lanceolate point; rachilla to 6 cm long, arched; female flower outer side of outer perianth with black spots, both whorls split longitudinally in fruit; involucrophorum sessile. Fruit ovoid, ca. 1 x 0.8 cm, scales in 21 vertical rows, yellowish white with thin brown margin, channelled in the middle; endosperm not ruminate.
    [PW]
    Use
    Used in furniture industry and house construction. Leaves are used for thatching.

    Images

    Distribution

    Native to:

    Nicobar Is.

    Calamus dilaceratus Becc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    s.coll. [s.n.], Nicobar Is. K000697956 isotype

    First published in Rec. Bot. Surv. India 2: 198 (1902)

    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
    • C. Renuka, A Manual of the Rattans of Andaman and Nicobar Islands. 1995

    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