Chamaedorea radicalis Mart.

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

MEXICO. Hidalgo. Nuevo Leon. San Luis Potosi. Tamaulipas.
Moist, oak forest; to 1,000 m elevation; often on limestone.
General Description
Habit: solitary (rarely cespitose?), erect, slender, appearing stemless or eventually to 3-4 m tall. Stem: 2.5-3 cm diam., short, curved, subterranean and then with congested nodes, or sometimes aboveground, elongate, then green, smooth, ringed, internodes to 15 cm long. Leaves: 4-8, erect-spreading, pinnate; sheath 15-25 cm long, thick, leathery, fibrous, light green, drying hard and durable, obliquely and rather long-open apically, tubular only in lower 1/2, light green, brown-margined, below this whitish and green-striate- nerved; petiole 15-30 cm long, obtusely 3-sided, grooved and light green above, rounded and light green below; rachis to 60-70 cm long or more, triangular, sharply angled and green above, rounded and lighter green below; pinnae 10-18 or more on each side of rachis, to 40 cm x 1-2.5 cm, terminal ones often wider, straight, linear-Ianceolate, acuminate, slightly falcate, dark green, whitish callus at point of attachment to rachis above, alternate or subopposite, spreading, ± stiff, sometimes slightly drooping with age, ± thick, rough and raspy texture, a central midrib, 23 lateral primary nerves on each side above, these somewhat obscured and none prominent, midrib prominent below, secondaries and tertiaries numerous, faint. Inflorescences: interfoliar, erect, long-pedunculate, if plant stemless often appearing to arise from base, ifaboveground stem present then often infrafoliar in fruit; peduncles to 1 m long, equalling or exceeding leaves, to 1 cm wide, 7-8 mm thick, ± flattened, green in flower and fruit; bracts 6-10, prophyll to 5 cm, 2nd bract to 12 cm, 3rd to 20 cm, 4th to 26 cm, 5th, 6th, and 7th to 30 cm, 8th to 26 em, 9th to 17 cm, uppermost exceeding peduncle and extending onto rachis and often concealing a small rudimentary bract, tubular, acuminate, obliquely longopen apically, often bifid, green at anthesis becoming brown with age, papery-fibrous, longitudinally striate-nerved. Staminate with rachis 5-15 cm long, flattened, green; rachillae 8-20, these 25-30 cm long, 3mm diam., spreading, mostly simple but sometimes lower ones branched once or twice, green, minutely white-spotted. Pistillate spicate, furcate, or with up to 10 rachillae; if branched rachis 4-10 cm long, erect and green in flower, spreading and green in fruit; flower-bearing portion or rachillae 20-25 cm long, 4-6 mm diam., obscurely angled, erect but becoming pendulous or spreading when heavily laden with fruits, green, minutely whitespotted. Flowers: Staminate solitary distally, in ± linear groups of 2-5 basally, groups ± in spirals, 3 x 4 mm, subglobose, greenish; calyx 1-2 x 3 mm, deeply lobed, green becoming brown, sepals briefly imbricate basally, broadly rounded apically; petals 3 x 3 mm, broadly triangular, acute, valvate, erect, green and minutely white-spotted, stamens equalling or slightly exceeding petals, filaments stout, 2.5 x 0.75-1 mm, yellow, anthers 1 mm long, white; pistillode ± equalling stamens and petals, columnar, slightly enlarged apically, greenish. Pistillate solitary, in ± dense spirals, 3 x 3 mm, broadly conic, green; calyx 1.25-2 x 2.5-3 mm, nearly equalling petals, deeply lobed, green with brown margins, sepals free nearly to base, rounded apically, petals 2-2.5 x 2.5-3 mm, 1/3-1/2 as high as and tight against pistil, broadly triangular, imbricate in basal 3/4, acute; pistil 3.5 x 3 mm, subglobose or depressed-conical, green, minutely white-spotted, stigma lobes sessile, short, blunt, erect, dark. Fruits: 12 x 9 mm, ellipsoid to obovoid-globose, green changing to yellow then orange and finally red with a glaucous bloom when completely ripe.

Native to:

Mexico Northeast

Chamaedorea radicalis Mart. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Chase [23251] 64692.000

First published in Hist. Nat. Palm. 3: 308 (1849)

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.


Palmweb - Palms of the World Online

  • Hodel, D. 1992. Chamaedorea Palms, The Species and Their Cultivation. The International Palm Society.

  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.

  • Kew Science Photographs

    Digital Image © Board of Trustees, RBG Kew

  • Palmweb - Palms of the World Online

    Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet Accessed on 21/04/2013
    Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License