1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus wanggaii W.J.Baker & J.Dransf.

        This species is accepted, and its native range is W. New Guinea.

    [PW]
    Diagnostic
    C. longipinnae Lauterb. et K. Schum. affinis sed foliolis paucioribus aggregatis oblanceolatis vice regularibus linearibusque, setis foliolorum longissimis, spinis ocreae triangularibus differt.
    Conservation
    Data deficient. The type locality of C. wanggaii falls outside the Wondiwoi Mountain reserve. Although C. wanggaii occurs in abundance at the type locality, it may be threatened by impending forestry activities. There is considerable logging activity in the area and the type locality itself has been assessed for timber extraction. However, it is not possible to assign a conservation category because the available distribution data is inadequate.
    Vernacular
    Not known.
    General Description
    Moderately robust, clustering rattan climbing to 25 m. Stem with sheaths c. 15 mm diam., without sheaths to 7 - 9 mm diam.; internodes c. 35 cm. Leaf ecirrate to 75 cm long including petiole; sheath dark green, with abundant, thin indumentum of minute, matted, brown and white scales, with numerous spines, 2 - 6 x 0.5 - 1 mm, solitary, narrowly triangular; knee 28 mm long, 13 mm wide, colour and armature as sheath; ocrea 22 x 2.6 cm, persistent, inflated, boat-shaped, split longitudinally to base on side opposite petiole insertion, clasping and usually obscuring sheath, papery, tattering, with sparse indumentum as sheath, armed as sheath; flagellum present, c. 2 m; petiole c. 13 cm, 6 mm wide and 5 mm thick at base, shallowly channelled adaxially, rounded abaxially, with sparse indumentum of scales as sheath, adaxial surface with short spines similar to sheath spines, abaxial surface with scattered solitary grapnel spines; rachis c. 51 cm, indumentum as petiole, unarmed adaxially, abaxial surface as petiole; 28 leaflets each side of rachis, arranged in three widely-spaced groups of 9 - 11 leaflets, leaflets regularly spaced within groups, but divaricate, upper and lower leaflets of middle group overlapping with leaflets in adjacent groups, oblanceolate, longest leaflet in upper part of lowest group, 33 x 2 cm, mid-leaf leaflets 26.5 x 2 cm, apical leaflets 17 x 1.2 cm, apical leaflet pair briefly united, leaflets armed with conspicuous bristles on mid-vein and one major either side, 7 - 11 mm, bristles very rare or absent from abaxial surface, numerous short bristles on margin, 0.5 - 1 mm, some scales on leaflet bases, transverse veinlets conspicuous. Staminate inflorescence c. 2.2 m long including c. 1.9 m peduncle (always?) and at least 25 cm flagelliform tip, branched to 3 orders; prophyll 38 x 0.4 cm, strictly tubular, splitting very briefly at apex, with thin indument of purple-brown scales, armed with numerous grapnel spines; peduncular bracts 3 (always?), peduncular and rachis bracts similar to prophyll, with indumentum and armature as prophyll; primary branches 1 (always?), to at least 19 cm long, lax, with 11 rachillae in available material, bracts on first order branch very sparsely armed; rachillae 26 - 40 mm x 1.5 mm, straight to recurved; rachilla bracts 1.4 x 1.5 mm, distichous, shallowly funnel-shaped, with indumentum as prophyll; floral bracteole 1.5 x 1.5 mm. Staminate flowers 3.3 x 1.7 mm prior to anthesis; calyx 1.8 mm diam., tubular in basal 1.7 mm, with 3 lobes 0.7 x 1 mm, scattered scales as prophyll; corolla 2.5 x 1.5 mm in bud, tubular in basal 0.5 mm, very few scales as prophyll; stamens 6, filaments 1 x 0.2 mm, anthers 1.4 x 0.5 mm; pistillode 0.8 x 0.2 mm, trifid. Pistillate inflorescence not seen. Pistillate flowers not seen. Fruit not seen. Seed not seen. Fig. 2.
    Distribution
    Known from a single collection near the Wosimi River, south of the Wandammen Peninsula, Papua, Indonesia.
    Biology
    Lowland, primary forest, 30 m.

    Images

    Distribution

    Native to:

    New Guinea

    Calamus wanggaii W.J.Baker & J.Dransf. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 27, 2000 Barrow, S. [129], Indonesia K000112762 holotype

    First published in Kew Bull. 57: 863 (2002)

    Accepted by

    • 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
    • W.J. Baker & J. Dransfield, Calamus longipinna (Arecaceae: Calamoideae) and its relatives in New Guinea. 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