1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Calamus L.
      1. Calamus plicatus Blume

        This species is accepted, and its native range is Peninsula Thailand to W. Malesia and Philippines (Mindanao).

    [PW]
    Distribution
    Confined to ultrabasic rock in the lowlands. Endemic.
    General Description
    Solitary or clustering rather slender rattan with stems rarely more than 10 m long; stem without sheaths c 6 mm diam., with sheaths to 13 mm diam.; internodes to 10 cm. Sheaths pale yellowish-green, armed with scattered or laterally grouped short bulbous-based triangular black-tipped spines to 3 mm, each usually with an apical tuft of brown hairs, and pale to dark brown scales between the spines; low collars bearing very short spines between larges spines sometimes also present. Knee rather poorly developed. Ocrea low, hairy. Leaf cirrate to 115 cm including the very short petiole to 3 cm and cirrus to 60 cm; leaflets pale yellowish-green 9-11 on each side grouped in pairs in distal part, ± solitary near the base, very narrow, linear, ± pendulous, not reflexed across the stem, the longest to 30 x 1 cm; often narrower, with ± thickened margins; transverse veinlets conspicuous. Male and female inflorescences dissimilar, the male branched to 3 orders with crowded rachillae to 7 x 1.5 mm; female very lax to 75 cm with 4 partial inflorescences and very distant rachillae to 70 x 2 mm. Mature fruit rounded c 12 mm diam., with short beak and covered in 15 vertical rows of reddish-brown scales. Seed rounded c 10 mm diam., deeply pitted; endosperm slightly ruminate. Seedling leaf unknown. (Fig. 47)
    [PW]
    Distribution
    Widespread in Temburong District. Elsewhere widespread in Borneo, but never very abundant. Endemic.
    General Description
    Very slender solitary rattan climbing to great heights, often over 60 m in length; stem without sheaths c. 4 mm diam., with sheaths to 8 mm diam.; internodes to 13 cm, frequently less in exposed stems. Sheaths dull dark green with very few triangular spines to 3 mm, often with wart-like bases; knee well developed; ocrea to 3 mm fringed with hairs. Leaf cirrate to 90 cm including the cirrus to 45 cm, often the whole leaf to only 30 cm in exposed stems; petiole absent or very short, c. 1 cm; leaflets c. 8 on each side of the rachis, lanceolate and abruptly narrowed at the tip, irregularly arranged in pairs or singly, the basal 1 or 2 reflexed across the stem, the longest to 13 × 2 cm, dark green (drying pale), ± cucullate, transverse veinlets conspicuous. Inflorescences without terminal flagellum, to 45 cm with c. 8 partial inflorescences in all, in detail very similar to that of the type variety but much smaller. Mature fruit ovoid (? always), c. 15 × 10 mm, with a short beak and covered with 14 vertical rows of straw-coloured scales with darker margins. Seed ovoid c. 12 × 8 mm; endosperm deeply ruminate. Seedling leaf bifid. (Fig. 36).
    Vernacular
    Rotan Peladas (Br.), Uwai Padas (Dus.), Wi Anak (Ib.)
    [PW]
    General Description
    This is a very poorly known species that may be conspecific with Calamus pogonacanthus.
    Distribution
    Known only from south-eastern Kalimantan.
    Conservation
    Endangered.

    Images

    Distribution

    Native to:

    Borneo, Malaya, Philippines, Sumatera, Thailand

    Calamus plicatus Blume appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dransfield, J. [JD5735], Malaysia Calamus laevigatus var. serpentinus K000114000
    Dransfield, J. [JD5781], Malaysia Calamus laevigatus var. serpentinus K000114002
    Dransfield, J. [JD5789], Sabah Calamus laevigatus var. serpentinus K000113999 holotype
    Majawat [SAN125949], Malaysia Calamus laevigatus var. serpentinus K000114001
    Sundaling [SAN124606], Malaysia Calamus laevigatus var. serpentinus K000114003
    Aug 18, 2002 Sundaling, D [142290], Malaysia Calamus laevigatus var. mucronatus K000114454
    Aug 7, 1996 Graefen [SFDP5], Indonesia Calamus laevigatus var. mucronatus K000113875
    Apr 19, 1994 Church [1011], Indonesia Calamus laevigatus var. mucronatus K000113996
    Dec 15, 1993 Sibil [161], Malaysia Calamus laevigatus var. mucronatus K000113857
    Jan 1, 1992 Stockdale, M.C. [13], Brunei Calamus laevigatus var. mucronatus K000113861
    Jan 1, 1992 Stockdale, M.C. [54], Brunei Calamus laevigatus var. mucronatus K000113860
    Sep 14, 1990 Wong, K.M. [1360], Brunei Calamus laevigatus var. mucronatus K000113665
    Sep 14, 1990 Wong, K.M. [1388], Brunei Calamus laevigatus var. mucronatus K000113664
    Jul 26, 1989 Lee [S45448], Malaysia Calamus laevigatus var. mucronatus K000113872
    Aug 20, 1987 Banyeng [43700], Malaysia Calamus laevigatus var. mucronatus K000113866
    Oct 24, 1979 Dransfield, J. [JD5799], Malaysia Calamus laevigatus var. mucronatus K000113873
    Oct 25, 1978 Dransfield, J. [JD5319], Malaysia Calamus laevigatus var. mucronatus K000113870
    Oct 25, 1978 Dransfield, J. [JD5278], Malaysia Calamus laevigatus var. mucronatus K000113867
    Sep 1, 1978 Ashton, P. [169], Brunei Calamus laevigatus var. mucronatus K000113863
    May 9, 1978 Native Collector [2417], Malaysia Calamus laevigatus var. mucronatus K000113618
    May 9, 1978 Anderson [S19118], Malaysia Calamus laevigatus var. mucronatus K000113997
    May 9, 1978 Dransfield, J. [JD4687], Malaysia Calamus laevigatus var. mucronatus K000113874
    May 9, 1978 Dransfield, J. [JD4620], Malaysia Calamus laevigatus var. mucronatus K000113876
    May 9, 1978 Lobb [1], Malaysia Calamus laevigatus var. mucronatus K000113619
    May 9, 1978 Lobb [18], Malaysia Calamus laevigatus var. mucronatus K000113620
    May 9, 1978 Manokaran [FRI18505], Malaysia Calamus laevigatus var. mucronatus K000113868
    Oct 25, 1977 Dransfield, J. [JD5273], Malaysia Calamus laevigatus var. mucronatus K000113865
    Dransfield, J. [JD6039], Malaysia Calamus laevigatus var. mucronatus K000113859
    Dransfield, J. [JD5787], Malaysia Calamus laevigatus var. mucronatus K000113871
    Dransfield, J. [7111], Brunei Calamus laevigatus var. mucronatus K000113858
    Dransfield, J. [7109], Brunei Calamus laevigatus var. mucronatus K000113862
    Dransfield, J. [6083], Malaysia Calamus laevigatus var. mucronatus K000113877
    Christensen [1185], Malaysia Calamus laevigatus var. mucronatus K000113864
    Christensen [1670], Malaysia Calamus laevigatus var. mucronatus K000113856
    Christensen [1225], Malaysia Calamus laevigatus var. mucronatus K000113998
    Bunker, W. [OX15], Malaysia Calamus laevigatus var. mucronatus K000113995
    Bunker, W. [OX42], Malaysia Calamus laevigatus var. mucronatus K000113994
    Sep 11, 2000 Mogea, J.P. [7394], Indonesia Calamus laevigatus K000114257
    May 8, 1978 Wray, L. [3017], Peninsular Malaysia Calamus laevigatus K000207732 syntype
    May 8, 1978 Wray, L. [2392], Peninsular Malaysia Calamus laevigatus K000207733 syntype
    Dransfield, J. [JD5579], Malaysia Calamus laevigatus K000113869
    Ambriansyah [AA472], Indonesia Calamus laevigatus K000113632
    Dewol [SAN68006], Malaysia Calamus laevigatus K000113673
    Awmack, C. [271], Indonesia Calamus laevigatus K000113629

    First published in Rumphia 3: 67 (1847)

    Accepted by

    • 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.

    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