Cnidoscolus Pohl
  • Pl. Bras. Icon. Descr. 1(2[–3]): 56–60[–63], pl. 49–50[–52]. 1827.
  • Bull-nettle, mala mujer [Greek cnide, nettle, and skolos, thorn, alluding to stinging hairs]


Cite taxon page as 'WFO (2020): Cnidoscolus Pohl. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000008700. Accessed on: 05 Dec 2020'

General Information

CNIDOSCOLUS Pohl

Por Grady L. Webster

Arboles, arbustos o hierbas; tallos armados de tricomas urticantes, con látex; plantas monoicas. Hojas alternas, simples, palmatilobadas; pecíolos con glándulas o papilas en el ápice, estipuladas. Inflorescencias dicasiales terminales, flores apétalas, cáliz petaloide; flores estaminadas con cáliz obviamente gamofilo, lobos 5, imbricados, disco extrastaminal anular, estambres 8–10 (en Nicaragua), al menos los interiores connados, estaminodios en el ápice de la columna estaminal; flores pistiladas sésiles o cortamente pediceladas, sépalos 4–5, libres o connados, disco anular, ovario 3-locular, 1 óvulo por lóculo, estilos libres, multífidos o laciniados. Fruto capsular; semillas carunculadas.

Género americano con 50 especies, mayormente concentradas en México y Brasil; 4 especies se encuentran en Nicaragua de las cuales 1 es cultivada y a veces espontánea.

G.J. Breckon. Cnidoscolus, Section Calyptosolen (Euphorbiaceae) in Mexico and Central America. Ph.D. Thesis, University of California, Davis. 1975; G.J. Breckon. Studies in Cnidoscolus (Euphorbiaceae). 1. Jatropha tubulosa, J. liebmannii and allied taxa from Central America. Brittonia 31: 125–148. 1979.

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

    Hierbas, arbustos o árboles, monoicos, con indumento de tricomas simples, usualmente urticantes, la savia blanca; estípulas presentes, pequeñas. Hojas alternas, el pecíolo largo, generalmente con un área glandular en la unión con la lámina; lámina simple, palmadamente 3–7-lobulada (en CR), de otra forma subentera a dentada o lobulada (en CR). Infls. terminales (a veces pseudoaxilares), bisexuales, dicasiales, las fls. pistiladas  proximales y las estaminadas distales. Fls. estaminadas con disco anular; sépalos 5, connatos en un cáliz a menudo petaloide; pétalos ausentes; estambres 8–10(–25), en 2 ó más verticilos, los externos separados y los internos connatos, o todos connatos. Fls. pistiladas con disco anular; sépalos 4 ó 5, separados (en CR), deciduos; estaminodios a veces presentes; ovario 3(–5)-locular; óvulos 1 por lóculo; estilos connatos basalmente, laciniados o (raramente) bífidos. Frs. capsulares o (raramente) drupáceos, inermes; semillas lisas, carunculadas.

  • Provided by: [D].Manual de Plantas de Costa Rica
    • Source: [
    • 4
    • 7
    • ]. 

    Herbs [shrubs or trees], perennial, monoecious; hairs unbranched, always some stinging; latex white. Leaves [persistent or deciduous], alternate, simple; stipules present, deciduous [persistent]; petiole present, glands present at apex; blade palmately lobed [unlobed], margins entire or dentate, laminar glands absent; venation palmate (pinnate in lobes) [pinnate]. Inflorescences bisexual (pistillate flowers central, staminate lateral), terminal, dichasial cymes; glands subtending each bract 0. Pedicels present. Staminate flowers: sepals 5, white, petaloid, imbricate, connate 1/2 length; petals 0; nectary intrastaminal, annular; stamens [8–]10[–25] in 2[–6] whorls, outer whorl distinct [connate proximally], inner whorl connate proximally; staminodes absent or present at apex of staminal column; pistillode absent. Pistillate flowers: sepals 5, white, petaloid, distinct [connate proximally]; petals 0; nectary annular; staminodes often present; pistil 3-carpellate; styles 3, connate basally, [1–]2–3 times 2-fid. Fruits capsules. Seeds ovoid; caruncle present. x = 9.

  • Provided by: [G].Flora of North America @ efloras.org
    • Source: [
    • 5
    • ]. 

    Tree, shrubs, or herbs; monoecious; stems and leaves containing milky latcx and armed with stinging hairs. Leaves alternate; petioles long, glandular at junc- tion with blade; stipules usually present; palmately (rarely pinnately) veined, mostly palmately lobed, sometimes deeply parted and nearly compound. Inflo- rescences terminal (sometimes pseudo-axillary) dichasia, the pistillate flowers at the lower (proximal) nodes, the staminate at upper nodes; flowers with more or less petaloid calyx, usually white; apetalous. Staminate flowers with calyx gamo- sepalous, lobes imbricate in bud; disc annular; stamens 8-10(-25), the outer free and the inner connate (or all connate); pollen grains globose, periporate, clavate; filiform staminodes (pistillodes?) sometimes present atop staminal column. Pistil- late flowers with calyx chorisepalous, the sepals deciduous (or gamosepalous in some species); disc annular, sometimes with staminodes; ovary of 3 (rarely 5) carpels, the ovules 1 per locule, the styles ? free, several times bifid or laciniate (rarely once bifid), sometimes apically dilated. Fruits capsular (rarely drupace- ous); seeds carunculate, with copious endosperm, the embryo straight, the cotyle- dons broad and longer than radicle.

  • Provided by: [F].Flora de Panama
    • Source: [
    • 6
    • 3
    • ]. 

    "Monoecious; pet none; staminate cal gamosepalous, petaloid, white, with 5 imbricate lobes; disk annular, extrastaminal; stamens 8–10+, at least the inner connate below; pistillate cal small and caducous; ovary trilocular; styles several times bifid or laciniate; seeds 3, carunculate; herbs or woody plants with septate pith and milky juice, armed with stinging hairs; lvs simple, alternate, coarsely toothed or lobed; fls in terminal cymes, the staminate above the few pistillate ones. 50, New World."

  • Provided by: [H].New York Botanical Garden
    • Source: [
    • 8
    • ]. 

    Habit

    Tree, shrubs, or herbs

  • Provided by: [F].Flora de Panama
    • Source: [
    • 6
    • 3
    • ]. 

    Distribution

    An American genus of about 50 species, the majority in Mexico and Brazil.

  • Provided by: [F].Flora de Panama
    • Source: [
    • 6
    • 3
    • ]. 

    Included Species

    Other Local Names

    NameLanguageCountry
    Bull-nettle, mala mujer [Greek cnide, nettle, and skolos, thorn, alluding to stinging hairs]

      Bibliography

     Information From

    Euphorbiaceae
    • A 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.
    • B Missouri Botanical Garden
    • C 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
    • D 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
    • E 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
    • F Missouri Botanical Garden
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • G Flora of North America Association
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • H Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • I CC0 1.0 Universal (CC0 1.0).