Cnidoscolus urens (L.) Arthur
  • Torreya


Cite taxon page as 'WFO (2020): Cnidoscolus urens (L.) Arthur. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000899398. Accessed on: 24 Nov 2020'

General Information

Cnidoscolus urens (L.) Arthur, Torreya 21: 11. 1921; Jatropha urens L.; J. adenophila Pax & K. Hoffm.; C. adenophilus (Pax & K. Hoffm.) Pax & K. Hoffm.

Hierbas, 0.5–2 m de alto, a veces ligeramente leñosas, con tricomas urticantes en las hojas, a veces en el cáliz estaminado y abundantes en el ovario, ramitas densamente armadas de tricomas urticantes pero sin espinas leñosas. Hojas 3–5-lobadas, 5–15 cm de largo y 8–18 cm de ancho, con lobos oblongos a obovados, abruptamente agudos a acuminados, subenteros a dentados; pecíolos 3–15 cm de largo, con un denso verticilo de papilas en el ápice. Dicasio 5–15 cm de largo, con 3–8 flores pistiladas; flores estaminadas con cáliz 7–14 mm de largo, hispídulo, blanco, estambres exteriores libres, los internos con filamentos connados, anteras 0.6–1.5 mm de largo, estaminodios en la parte superior de la columna, 1.5–2.5 mm de largo; flores pistiladas con cáliz dividido en segmentos 2.5–3 mm de largo, ovario pubescente, estilo 1.2–1.5 mm de largo, ramificado en segmentos engrosados. Cápsula 10–12 mm de largo; semillas oblongo-obovadas, algo comprimidas, 6.5–10 mm de largo y 3.5–5 mm de ancho.

Maleza común, en áreas alteradas y bosques secos en la zona pacífica; 0–1000 m; fl y fr todo el año; Stevens 9409, 14894; México hasta Argentina. Breckon ubica a las poblaciones nicaragüenses en la subespecie C. urens ssp. urens. "Chichicaste".

  • Provided by: [G].Flora de Nicaragua
    • Source: [
    • 2
    • ]. 

    Herb or softly woody subshrub 0.5-2 m high; stems densely armed with rigid stinging hairs 2-6 mm long. Leaves chartaceous; petioles mostly 3-12(-15) cm long, pubescent, sparsely to densely armed; junction of petiole and blade with a dense cluster (1.5-3 mm wide) of small digitiform glands; stipules split into a central subulate greenish part 2-5 mm long and several small lateral glands or gland-tipped setae; blades ovate or suborbicular in outline, 3-5-lobed, ? cordate at base, ca (5-)7-15 cm long, 8-18 cm broad, 5-7-palmatinerved, pubescent (often more densely so beneath), with stinging hairs along veins, the lobes oblong to obovate, obscurely to sharply denticulate, abruptly acute to acuminate. Dichasia terminal (or pseudoaxillary due to sympodial growth); peduncles sparsely to densely armed, 3.5-12 cm long; pistillate flowers ca 3-6 per inflorescence, at proxi- mal axils; staminate flowers ca 10-25 per inflorescence, clustered at tips of second- order branches. Staminate flowers subsessile (pedicels to 1 mm long); perianth greenish-white, unarmed, oblong-urceolate in bud, ca 11-13.5 mm long (in Panamanian specimens); perianth tube cylindric, basally dilated, ca 3-7.5 mm long, unarmed, glabrous to densely pubescent, the lobes suborbicular to ovate or broadly elliptic, ca 3-6 mm long, rounded, unarmed or with I or 2 stinging hairs, moderately to densely pubescent without (rarely glabrous); disc pulviniform, closely adnate to the base of the staminal column, densely hispidulous, 1 mm wide or more; stamens 10, biseriate, the outer series with filaments free, ca 3.5-4 mm long, the inner series with filaments ca 6.5-8.0 mm long, connate more than half- way into a column, the anthers elliptic, 1.3-1.5 mm long; staminodes filiform, ca 1.5-2.5 mm long. Pistillate flowers nearly sessile, pedicels becoming 1-4 mm long in fruit; sepals distinct, whitish, oblong, caducous, 2.8-3 mm long; disc a small annular ring ca 0.2 mm high; ovary pubescent and usually armate, sometimes glabrous, the styles nearly free, ca 1.2-1.3 mm long, incrassate, twice bifid. Capsules usually armed with stinging hairs, more or less rugose, ca 10-12 mm long; seeds oblong- obovate, somewhat compressed, 6.5-9.7 mm long, 3.5-5.1 mm broad, pale to dark brownish or grayish, more or less flecked, minutely rugulose, distinctly beaked, the caruncle deltoid, 1.2-1.5 mm high, 2-3 mm broad.

  • Provided by: [E].Flora de Panama
    • Source: [
    • 3
    • ]. 

    Hierba o arbusto, 0.75–3 m, los tallos sin aguijones, las ramitas densamente cubiertas por tricomas urticantes 6–9 mm. Hojas con el área glandular laminar (sobre la coyuntura de los nervios en la base de la lámina), ± orbicular, digitado- tuberculada; lámina 4–19 X 6–19 cm, los lóbulos a veces levemente lobulados. Infls. con el pedúnculo 6–10 cm. Fls. estaminadas con el cáliz 7–14 mm. Frs. 1–1.3 cm.

  • Provided by: [F].Manual de Plantas de Costa Rica
    • Source: [
    • 4
    • ]. 

    Distribution

    Widely distributed from eastern Mexico south to Argentina, Paraguay, and Brazil.

  • Provided by: [E].Flora de Panama
    • Source: [
    • 3
    • ]. 

    Distribution Map

     
    • Native distribution
    Found in
    • Southern America Brazil Rondônia
    • Alagoas
    • Bahia
    • Paraába
    • Pernambuco
    • Piauá
    • Rio Grande do Norte
    • Sergipe
    • Paraní
    • Espirito Santo
    • Minas Gerais
    • Rio de Janeiro
    • São Paulo
    • Brazilia Distrito Federal
    • Goiás

     Information From

    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • A Group Brazil Flora, REFLORA Program
    Euphorbiaceae
    • B CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • C Missouri Botanical Garden
    • D Missouri Botanical Garden
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • E Missouri Botanical Garden
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • F Missouri Botanical Garden
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • G Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).
    Global Tree Search
    https://tools.bgci.org/global_tree_search.php
    BGCI. 2018. GlobalTreeSearch online database. Botanic Gardens Conservation International. Richmond, U.K. Available at www.bgci.org. Accessed on 30/11/2018.
    • I Botanic Gardens Conservation International