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  1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Desmoncus Mart.
      1. Desmoncus horridus Splitg. ex Mart.

        This species is accepted, and its native range is Trinidad-Tobago to S. Tropical America.

    General Description
    Plants 6.7(2.0-15.0) m tall; stems 2.4(1.2-4.8) cm diameter, clustered. Leaf petioles 4.6(2.0-11.5) cm long; rachises 123.8(32.0-220.0) cm long, 9.5(3.4-20.5) mm wide, the spines usually >1 cm long, mostly adaxial or lateral, straight with briefly swollen bases; pinnae 19(7-28) per side of rachis, without a beard of spines at the bases, without spinules or dense tomentum at the bases adaxially; basal pinna 21.6(12.0-34.0) cm long, 1.9(1.3-3.7) cm wide; cirri well-developed, with acanthophylls, without spines abaxially, with intermediate acanthophylls present, without a wide gap between pinnae and acanthophylls. Inflorescences with the rachis ridged, not twisted, much thicker than the numerous, closely spaced and spirally or irregularly arranged rachillae, each rachilla not or only briefly adnate to the rachis, subtended by an acute bracteole and with a well-developed axillary pulvinus; peduncles 6.4(2.3-13.1) mm wide; peduncular bracts 28.3(10.5-47.0) cm long, broad, the surfaces ribbed, brown tomentose, sparsely to densely covered with long, straight or sinuous, briefly swollen-based, diagonally or vertically oriented spines, these flattened or triangular in cross-section, whitish-brown proximally, black or brown distally, with tomentose margins (rarely without spines); rachillae 19(7-33), brown tomentose initially; proximal rachillae 10.8(5.0-17.5) cm long, 1.3(0.7-1.9) mm wide; stamens 6-7; fruits 15.4(10.6-21.1) mm long, 9.5(7.4-12.4) mm wide, the surfaces uneven with numerous, subepidermal, short, often branching (Y-shaped) fibers; fruiting corollas less than one quarter as long as fruits, not or scarcely splitting, tending to remain cupular; endocarps narrowly ellipsoid with rounded apices, the pores lateral.

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá.

    Nativa en Colombia; Alt. 100 - 500 m.; Amazonia, Guayana y Serranía de La Macarena, Orinoquia.
    Preocupación Menor


    Native to:

    Bolivia, Brazil North, Brazil Northeast, Brazil West-Central, Colombia, Ecuador, French Guiana, Guyana, Suriname, Trinidad-Tobago, Venezuela

    Accepted Infraspecifics


    Other Data

    Desmoncus horridus Splitg. ex Mart. appears in other Kew resources:


    First published in A.D.d'Orbigny, Voy. Amér. Mér. 7(3): 51 (1844)

    Not accepted by

    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela. [Cited as Desmoncus orthacanthos.]
    • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Desmoncus orthacanthos.]


    Palmweb - Palms of the World Online

    • Henderson, A., A revision of Desmoncus (Arecaceae) in Phytotaxa 35. 2011

    Kew Backbone Distributions

    • Henderson, A. (2011). A revision of Desmoncus (Arecaceae) Phytotaxa 35: 1-88.


    Catálogo de Plantas y Líquenes de Colombia

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at and
    © Copyright 2017 World Checklist of Selected Plant Families.

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.

    Palmweb - Palms of the World Online
    Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet Accessed on 21/04/2013
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