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

        This species is accepted, and its native range is Borneo.

    [PW]
    Conservation
    Endangered.
    General Description
    Habit - Climbing; stems clustering; not branching in the forest canopy; not dying after flowering. Plants dioecious. Leaf-sheath - Tubular for most of its length; stem and sheath together 0.81-0.99 cm; flagellum long; knee present; with spines similar to the rest of the sheath. Sheath surface lacking small horizontal ridges; without hairs or minute spines; green; with scales on surface; brown. Leaf sheath with abundant spines; spines persistent; horizontally pointing; of different sizes; the larger spines tapered; the longest, excluding those at the mouth of the sheath 1-3cm. Spines straight; in life black; with smooth margins; the bases swollen. Spines mostly not grouped. Spines around the leaf sheath mouth much longer than on the rest of the sheath. Ocrea - Absent. Leaf-stalk - Absent or usually less than 3cm. Leaves - Ecirrate; rachis armed; not hairy. Undersurface of newly emerged leaflets same as upper surface. Scales absent from leaflet surfaces. Leaflets sessile; 1 to 10 on each side of rachis; regularly spaced and parallel; held in a single plane; linear; the leaflet tip acute. Longest leaflet 28.35-34.65 cm; not exceeding 2cm wide; with bristles abaxially only, (few or none above); the margins with many bristles. Bristles not interlocking; short, dark or dark-tipped up to 5mm long, or stiff black greater than 0.5mm long. Leaflets scarcely plicate; the veins not radiating; midrib raised and prominent adaxially. Lowermost leaflets not reflexed across the stem. Apical leaflets not or scarcely joined; not less than 4 cm long. Inflorescence - Inflorescence axis long, whip-like with clawed spines on the primary bracts; not rooting at its tip; much longer than the leaves; the first bract not enclosing the inflorescences at anthesis. Partial inflorescence present; bracts at the base of the partial inflorescences wholly tubular with a neat mouth or a small open limb, much shorter than the partial inflorescence. Rachilla lacking an enclosing bract; not at all pressed against the subtending bract. Flowers arranged in two rows. Male rachillae not less than 1 cm long. Female rachillae not congested; with conspicuously stalked flower cups. Bracts on the rachillae not net-like. Fruit - At maturity 0.9-1.3 cm; ovoid; red resin (Dragon's blood) absent. Calyx in fruit split to the base and wholly flattened. Fruit scales flat, lacking a central groove; the tips not recurved; colour on ripe fruit straw-brown or yellow-brown; when dry straw-brown or yellow-brown (excluding dark margins).
    Distribution
    A rattan restricted to lowland sites in west and central Kalimantan.

    Distribution

    Calamus schistoacanthus Blume appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jun 1, 1994 Giesen, W. [s.n.], Indonesia K000521331
    Heyne [28], Indonesia K000521328
    Heyne [16], Indonesia K000521327
    Heyne [28], Indonesia K000521329
    Giesen, W. [359], Indonesia K000521330

    First published in Rumphia 3: 49 (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.

    Literature

    Palmweb - Palms of the World Online
    • Dransfield J. and Patel M. 2005. Rattans of Borneo, an interactive key. Royal Botanic Gardens Kew.

    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.

    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