1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus inermis T.Anderson

        This species is accepted, and its native range is Assam to China (Yunnan) and Indo-China.

    [PW]
    Conservation
    Unknown. Listed as Threatened - Vulnerable in Vietnam (Phan Thuc Vat 1996).
    Distribution
    China (South Yunnan), Laos (probably North and Central) and Vietnam (Tonkin). Probably also South-east China (Merrill 1934).
    Vernacular
    Probably wai namleuang, wai leuang (Lao Loum).
    Biology
    Evergreen forest at 500-700 m (Vietnam) and probably 750 - 900 m (Laos).
    [PW]
    Distribution
    : INDIA (Assam, Meghalaya, West Bengal). Endemic.
    General Description
    A robust climber; stem cluster forming, with leafsheath 5 cm in diameter near lower part; leaves cirrate; leafsheath with distinct knee, more or less smooth on outer surface; tubular part of the sheath infrequently armed with flattened, subulate spines; rachis semiterete at lower part, armed below with paired or solitary hooks; leaflets numerous, lanceolate, in groups of 2 - 4 leaflets on each side of the rachis with long vacant space in between the groups; each to 50 cm long, to 4 cm broad at middle, 3-5 nerved; nerves mostly smooth on both sides or minutely spinous at margins and on upper nerves. Male inflorescence not seen. Female inflorescence 1.5 - 2 m long; partial inflorescences arching from the axis with distinct cushion at the point of attachment with the axis; rachillae sinuous, 20 cm long; 15-16 female flowers on each side of rachilla. Fruits globose, 3 cm in diameter; fruit-scales in 18 series, deeply channelled at middle; seed globose, centrally pitted; endosperm superficially ruminate; embryo basal; fruiting perianth cylindrical.
    Biology
    Infrequent in the moist forest of Garo and Khasia hills up to 700 m. It is also reported from the Buxa forest range of Jalpaiguri in West Bengal.
    [PW]
    Vernacular
    Probably wai nwn, wai niuw, wai nokkhor, wai namleuang (Lao Loum), kateng blor (Hmong).
    Conservation
    Unknown, probably of little concern since it occupies such a wide range, although Renuka (1999) noted considerable recent declines in North-east India.
    Distribution
    India (North-east), China (North-west and South Yunnan and, probably, South-east China) and probably also Thailand (North) and Laos (North and Central).
    Biology
    In evergreen forest in China at 1600 m. Probably at 1400 - 1800 m in Laos.
    [PW]
    Vernacular
    wai nokkhor, wai khor, wai lai, wai namhang, wai namleuang, wai khairt (Lao Loum), kloong (Phong), kateng koday (Hmong).
    Distribution
    Indochinese endemic. China (South Yunnan), Thailand (North and North-east) and Laos (North and Central).
    Conservation
    Unknown, but probably of relatively low concern given the large populations present in Laos.
    Biology
    Evergreen forest at 350 - 600 m (Laos), 600 - 1000 m (Thailand) and 600 - 950 m (Yunnan).
    [PW]
    Biology
    Evergreen forest at 1600 m.
    Distribution
    Indochinese endemic, known only from the type locality, where it is rarely found (Chen Sanyang, pers. comm. 1999).
    Vernacular
    None recorded.
    Conservation
    Of high concern since it is known from only one site. At present this site is carefully managed for the rattans it contains (Chen Sanyang, pers. comm. 1999).
    [PW]
    Use
    Apparently the cane is of high quality and widely traded. The shoot is edible. There are reportedly plantations for cane production in Vietnam (Vu Van Dung & Le Huy Guang 1996).
    [PW]
    Use
    The cane is of high quality and this is a preferred species in trade in South Yunnan.
    [PW]
    Use
    The cane is of high quality and widely traded. The shoot is edible.

    Images

    Distribution

    Native to:

    Assam, Bangladesh, China South-Central, East Himalaya, Hainan, Laos, Myanmar, Thailand, Vietnam

    Introduced into:

    China Southeast

    Calamus inermis T.Anderson appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 2000 Oulathong [201], Laos Calamus platyacanthus K000114543
    Balansa, B. [4360], Vietnam Calamus platyacanthus K000208121 isotype
    Apr 20, 2006 Ban, N.K. [PA142], Vietnam Calamus platyacanthoides K000208963
    Henderson, A. [3467], Vietnam Calamus platyacanthoides K000526523
    Mann, G. [s.n.], India Calamus khasianus K000521927 isotype
    Mann, G. [s.n.], India Calamus khasianus K000521926 isotype
    Mann, G. [s.n.], India Calamus khasianus K000522420 isotype
    Jan 1, 2000 Mann [s.n.], India Calamus nambariensis K000522016 isotype
    Oulathong [232], Laos Calamus nambariensis K000114555
    Jun 18, 2008 Barfod, A. [717], Thailand Calamus wailong K000526369
    Feb 1, 1999 Oulathong [213], Laos Calamus wailong K000114553
    Khamphone [372], Laos Calamus wailong K000114567

    First published in J. Linn. Soc., Bot. 11: 11 (1869)

    Not accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis. [Cited as Calamus nambariensis.]
    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford. [Cited as Calamus nambariensis.]
    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Calamus latifolius.]
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne. [Cited as Calamus latifolius.]

    Literature

    Kew Backbone Distributions
    • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.
    • 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