Critonia billbergiana (Beurl.) R.M.King & H.Rob.
  • Phytologia 22


Cite taxon page as 'WFO (2020): Critonia billbergiana (Beurl.) R.M.King & H.Rob. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000137385. Accessed on: 19 Feb 2020'

General Information

Critonia billbergiana (Beurl.) R.M. King & H. Rob., Phytologia 22; 48. 1971; Eupatorium billbergianum Beurl.; E. bartlettii B.L. Rob.; C. bartlettii (B.L. Rob.) R.M. King & H. Rob.

Trepadoras escandentes o procumbentes, sufruticosas o leñosas, trepando hasta a 15 m en los árboles; tallos teretes, medulosos, frágiles. Hojas opuestas, ovadas a elíptico-ovadas, 6–12 cm de largo y 2–6 cm de ancho, base redondeada u obtusa, márgenes escasamente serrulados, glabras, 3-nervias desde cerca de la base; pecíolos 1–2 cm de largo. Capitulescencias de címulas axilares, sésiles; involucros lineares a algo campanulados, 8–9 mm de largo; filarias en 5–6 series, desigualmente imbricadas, ovadas a ovado-lanceoladas, dorsalmente puberulentas cerca del ápice; flósculos 5–7, las corolas tubulares, 5–6 mm de largo, glabras, blanco opacas. Aquenios columnar-clavados, 3.5–4 mm de largo, pubescentes arriba o casi glabros; vilano de 40–50 cerdas gruesas, ancistrosas, 5–6 mm de largo, pajizo.

Rara, bosques perennifolios, zona atlántica; 0–100 m; fl y fr nov–abr; Moreno 14603, Stevens 19744; sur de México (Veracruz) a Panamá.

  • Provided by: [C].Flora de Nicaragua
    • Source: [
    • 1
    • ]. 

    Sparsely branching woody vines; stems greenish to pale brownish, terete, scarcely striate, glabrous. Leaves opposite; blades ovate, to 11 cm long and 5 cm wide, the base cuneate to somewhat rounded, parallel to the long basal secondary veins, the margins remotely serrulate to subentire, the apex slightly short- acuminate, the surface usually glabrous, sometimes sparsely pilose below on veins, the venation subpinnate to trinervate, the second pair of secondary veins most prominent; petioles to 2 cm long. Inflorescence pyramidally paniculate with the lowest branches in the axils of normal leaves, the branches densely corymbose with branchlets bearing few heads, glabrous to puberulous, the ultimate branches 0-4 mm long. Heads 9-12 mm high with 8-9 florets; involucral bracts 20-25, imbricate to subimbricate, in 4-5 series, 1-6 mm long and 1.5 mm wide, ovate to oblong- lanceolate with narrowly rounded apex, the innermost bracts acute, coriaceous, the outer surface glabrous; corolla whitish, 5-7 mm long, tubular or with a narrowly funnelform limb, glabrous, the lobes ca. 0.5 mm long, narrowly triangular; style branches slightly broadened distally. Achenes 3-4 mm long with 5-6 narrow ribs, numerous hairs on upper part, glabrous below, the achene base scarcely narrowed with broad carpopodium; pappus of ca. 40 crowded bristles partially in second series, 5-7 mm long, the bases of the bristles with distinct margins and flattened outer surfaces, the tips slightly but distinctly enlarged.

  • Provided by: [B].Flora de Panama
    • Source: [
    • 2
    • ]. 

    Habit

    woody vines

  • Provided by: [B].Flora de Panama
    • Source: [
    • 2
    • ]. 

    Distribution

    known from British Honduras, Guatemala, Honduras, Costa Rica, and Panama.

  • Provided by: [B].Flora de Panama
    • Source: [
    • 2
    • ]. 

     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • A CC0 1.0 Universal (CC0 1.0).
    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
    • B 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
    • C Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).