1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus temii T.Evans

        This species is accepted, and its native range is NE. Thailand.

    [PW]
    Biology
    In lower montane oak forest at 1300 - 1550 m. Fruits apparently almost ripe in February and May.
    Diagnostic
    a C. melanochroo Burret habitu arborescenti, endospermio ruminato differt; a C. oxycarpo Becc. et C. macrorhyncho Burret foliolis concoloribus indumento infra carenti, fructibus vix globosis et endospermio ruminato distinguenda.
    General Description
    Moderately robust, erect rattan up to 5 m tall. Distal part of leaf sheath brown when dry, tapering gradually into the petiole and bearing partial whorls of laminar, elastic black spines up to 3 cm long, the spine bases thickened, neatly defined from the blades and drying brown like the sheath. Amongst the larger spines many smaller, needle-like or laminar, black spines, mostly in groups. Entire leaf not seen, but large (perhaps 1.5 - 2 m long in total), ecirrate. Entire petiole not seen, probably greatly exceeding 50 cm, about 1 - 1.2 cm in diameter, rounded abaxially and deeply chanelled adaxially, armed on both surfaces with widely spaced, more or less complete whorls of large and small spines like those of the upper sheath. Rachis rounded abaxially, acutely bifaced adaxially, armed on all surfaces with incomplete whorls of laminar, black spines up to 2.5 cm proximally, much shorter distally. Leaflets arranged in groups of 2 - 6, more in the terminal group, lying in a single plane, angled away from the stem and not divaricate, ensiform or narrowly lanceolate, up to 40 x 2 cm, terminal pair not joined, drying light green adaxially and a paler grey-green abaxially but wholly lacking pale indumentum, adaxially bearing three lines of black bristles along the three prominent costae, abaxially with 1 - 3 sub-prominent veins, all without bristles. Male inflorescence unknown. Female inflorescence not seen entire, apparently more or less erect at base, drooping distally, more than 80 cm long, branched to two orders, partial inflorescences up to 40 cm long in the terminal part of the inflorescence, primary branches quite slender, primary and secondary bracts heavily tattered almost to the base, much of each bract eventually deciduous, degree of armature not clear in available material, the bract bases marked by pronounced dark rings at the point of attachment, rachillae arising at the base of their subtending bracts, stout in relation to the primary branches, appressed at the base, 1 - 2 (rarely 3) cm long, with flowers at 4 mm intervals on each side and thus appearing crowded, the axis very slender but rarely visible, rachilla bracts short and very broadly funnel-shaped, about 8 mm wide with a long apiculate limb on one side, involucrophore arising half inside the mouth of the rachilla bract, deeply cupular, involucre also deeply cupular but strongly asymmetrical, raised to a prominent exposed crest on the side bearing the impression of the neuter flower, broadly and deeply notched and lower than the rim of the involucrophore on the other side. Site of the neuter flower about '/4 as large as the site of the female flower. Flowers not seen. Fruiting perianth explanate, split almost to the base but the basal part of each lobe thickened and the distal part slightly reflexed, giving the impression of a weakly pedicelliform perianth. Fruit, very broadly ellipsoid, almost globose with a short, abrupt beak, 19 x 14 - 15 mm, very dark, the scales blackish, becoming deep chestnut brown basally and bearing a mid-brown fimbriate margin, sometimes lightly channelled. Concealed part of scale base bright yellow, only visible when fruit is broken open. Seed ellipsoid, 11 x 10 x 8 mm, flattened on the side bearing the deep chalazal fovea, the surface deeply pitted and channelled, shape and pattern together resembling a human brain. Albumen strongly ruminate. Embryo basal.

    Images

    Distribution

    Native to:

    Thailand

    Calamus temii T.Evans appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Smitinand, T. [s.n.], Thailand K000207803 holotype

    First published in Kew Bull. 57: 85 (2002)

    Accepted by

    • Barfod, A.S. & Dransfield, J. (2013). Flora of Thailand 11(3): 323-498. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • Henderson, A. (2009). Palms of Southern Asia: 1-197. Princeton university press, Princeton and Oxford.
    • Pooma, R. (ed.) (2005). A preliminary check-list of threatened plants in Thailand: 1-193. National Park, Wildlife and Plant Conservation Department, Bangkok.
    • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Palmweb - Palms of the World Online
    • T.D Evans, A new species of Calamus (Arecaceae: Calamoideae) from north-east Thailand. 2002

    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