Adiantum petiolatum Desv.
  • Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 326 (1811)


Cite taxon page as 'WFO (2023): Adiantum petiolatum Desv. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001109479. Accessed on: 22 Mar 2023'

General Information

18. Adiantum petiolatum Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 326-327 (1811). Holotipo: Brasil o Guayana Francesa, Desvaux s.n. (P).

Por B. Zimmer.

Adiantum kaulfussii Kunze, A. lucidum (Cav.) Sw. var. pinnatum E. Fourn, A. obliquum Kaulf., non Willd., A. oblongatum Schrad.

Terrestres; rizoma cortamente rastrero, las escamas 1.5-0.2-0.4 mm, lineares a largamente lanceoladas, dentadas, pardo-doradas; hojas (22-)30-42 cm, no enraizando en el ápice; pecíolo tan largo como la lámina o más largo que ella, glabrescente; lámina 11-19 x 5-12 cm, largamente lanceolada, 1-pinnada, el haz lustroso, el envés opaco y glauco, glabro, las bandas de idioblastos oblicuas, conspicuas sólo en el haz, el segmento terminal rómbico-lanceolado, oblicuo, a veces 1-lateral o 2-lateralmente lobado; raquis glabrescente (principalmente abaxialmente) o esparcidamente escamoso, las escamas angosta y largamente lanceoladas o piliforme-dentadas, ramificadas en la base; pinnas 6-11 pares, 3-6.5 x 1-2.5(-3) cm, alternas, deltadas a lanceolado-oblongas, agudas a acuminadas, cortamente pediculadas a subsésiles, la base oblicua, acroscópicamente traslapadas al raquis, basiscópicamente cuneadas, el pedículo hasta 0.3 cm, no articulado, su color oscuro extendido hacia la costa abaxialmente sólo por hasta 0.2 cm; costa inconspicua; nervaduras libres, visibles en ambas superficies, terminando en los dientes; márgenes estériles uniformemente serrados a denticulados; soros varios por segmento, en ambas superficies de los segmentos, corta a largamente lineares; indusio puberulento; esporas blanquecinas a crema. Selvas altas perennifolias, riberas sombreadas. T (Cowan 3067, MEXU); Ch (Ghiesbreght 412, B); B (Smith, 1981: 24); G (Bernoulli 900, B); H (Saunders 367, BM); N (Proctor et al. 27027, F); CR (Brade y Brade 747, B); P (Hayes 45, B). 0-1500 m. (S. México, Mesoamérica, Colombia, Venezuela, Guayanas, Ecuador, Perú, Bolivia, Brasil, Antillas, Trinidad y Tobago.)

Adiantum petiolatum varía en el indumento del raquis y el número y talla de los segmentos; es muy similar a A. obliquum. Los ejemplares típicamente 1-pinnados pueden distinguirse por las características dadas en la clave. Los ejemplares 2-pinnados y aquellos con características intermedias tal vez representan híbridos y requieren de estudio crítico.

  • Provided by: [E].Flora Mesoamericana
    • Source: [
    • 2
    • 3
    • ]. 

    Adiantum petiolatum Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 326. 1811. Fig. 5 G.

    Rizoma cortamente rastrero, con escamas linear-lanceoladas, café-doradas, enteras a levemente den­ticuladas; hojas 10–40 cm de largo; pecíolo glabro o con escamas pectinadas dispersas; lámina oblongo-deltada, 1-pinnada, gla­bra, lustrosa adaxialmente, opaca y glauca abaxialmente; raquis con pelos y escamas dispersos y caducos; pinnas 3–10 pares, deltadas a lanceolado-oblongas, bases oblicuas, corta­men­te pediculadas a sub­­sésiles, no articuladas, el color oscuro del pe­dí­culo pasando al segmento abaxialmente; en los seg­men­tos estériles los nervios terminando en  los márgenes uniformemente serrados a denticulados; soros 8–15 por segmento, indusios oblongos, lineares o levemente arqueados sobre los márgenes acros­cópico y distal basiscópico del segmento.

    Pluvioselvas y bosques hú­me­dos; Moreno 15045, Stevens 16801; 0–350 m; México a Bolivia y Brasil, las Antillas. LC

  • Provided by: [D].Flora de Nicaragua
    • Source: [
    • 4
    • ]. 

    Rhizomes short-creeping, 2–4 mm diam.; rhizome scales castaneous, entire to faintly denticulate, linear-lanceolate, 2.5–3 x0.5 mm; fronds distant, mostly 2–5 mm apart, 22–45 cm long, arching; stipes black, lustrous, 10–25 cm x 1–1.5 mm, ca. 1/2–2/3 the frond length, glabrous or with sparse pectinate scales to 2 mm long; blades oblong-deltate, 1-pinnate; rachises atropurpureous, with scattered scales and hairs, glabrescent, the scales linear, branched or pectinate at the bases, otherwise entire or nearly so; pinnae 6–9 pairs, the proximal pinnae often largest, 3.5–6.5 cm long, distal pinnae 1/2–3/4 as long, lateral pinnae inequilateral, stalked 1–5 mm, stalk color passing into pinna bases, terminal pinna subconform, equilateral, pinna bases oblique, margins finely and evenly serrulate, apices acute or acuminate, costae near mid-pinna or slightly closer to basiscopic margins, nonarticulate; veins free, forking, ending in marginal teeth; indument absent on both surfaces; idioblasts present on both blade surfaces, conspicuous adaxially, sometimes faint abaxially; sori 6–14 along acroscopic margins, also to 9 along distal part of basiscopic margins; indusia 1–6 mm long, oblong, linear, or slightly arcuate, glabrous; 2n=60 (Braz).

  • Provided by: [B].Memoirs of the New York Botanical Garden
    • Source: [
    • 5
    • ]. 

    Rhizomes short-creeping, covered with brown, shiny, entire scales 2-3 mm long. Fronds alternate, erect or ascending, pinnate, 10-40 cm long; petiole black, slender, glabrous; blade oblong, 15-25 X 6-12 cm, the rachis like petiole in color and pubescence; pinnae 4-12 on each side of rachis, alternate, simple, unequal, terminal pinna present; basal pinnae shortly petiolate, lanceolate, often clasping rachis, with flabellate veins, glaucous on abaxial surface. Sori numerous, linear, arched.

  • Provided by: [B].Memoirs of the New York Botanical Garden
    • Source: [
    • 6
    • ]. 

    Rhizome short-creeping, 3-7 mm thick, bearing at apex a dense tuft of lustrous, light brown, subclathrate, narrowly lance-attenuate scales mostly 2-3 mm long, these entire or rarely denticulate near base. Fronds very closely distichous, erect or ascending, 25-60 cm long; stipes shining black, slender, glabrous, 10-40 cm long, equalling to much exceeding length of blade. Blades oblong to deltate-oblong, 15-25 cm long, 6-12 cm broad; rhachis like the stipe; pinnae 4- 12 pairs and a terminal one, altemate, simple (rarely the basal ones pinnate), inequilateral, the lower ones stalked (stalks 1-5 mm long), lancedeltate, broadly rounded at acroscopic base and often overlying rhachis, deeply excavate on basiscopic side; middle and distal pinnae oblonglanceolate, long-acuminate (or sterile ones obtuse to somewhat acute); veins obliquely ffabellate from the slender median costa; tissue thinly papery, very glaucous abaxially. Sori several to many along both longest margins, linear, arcuate, and adjacent; indusioid flap brown, minutely fimbriate.

  • Provided by: [B].Memoirs of the New York Botanical Garden
    • Source: [
    • 7
    • ]. 

    Morphology

    Tallo: rizoma(s) corta(s)/rastrera(s)/nodoso(s). Hoja: fronde(s) pinada(s); raquis con escama(s)/con pelo(s); estéril(es) margen(es) serrulada(s); nervura(s) libre(s); idioblasto presente(s); pina o pínula(s) contínua(s)/subsésil(es)/dimidiado/glabro(s)/en la(s) amba(s) superficie(s). Tipo de esporangio: leptosporángio pedicelado(s)/glabro(s). Esporangio: ánulo vertical/con/indusio/glabro(s). Esporo: trilete arrugada(s)/à/tuberculada(s).

  • Provided by: [C].Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    • Source: [
    • 1
    • ]. 

    Stem: rhizome short/creeping/nodose. Leaf: frond pinnate; rachis with scale/with hair; sterile margin serrulate; veins free; idioblast present; pinna or pinnule continuous/subsessile/dimidiate/glabrous/on the both surface. Type of sporangium: leptosporangium pedicellate/glabrous. Sporangium: annulus vertical/with/indusium/glabrous. Spore: trilete rugate/to/tuberculate.

  • Provided by: [C].Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    • Source: [
    • 1
    • ]. 

    Caule: rizoma(s) curta(s)/rasteira(s)/nodoso(s). Folha: fronde(s) pinada(s); raque com escama(s)/com tricoma(s); estéril(eis) margem(ns) serrulada(s); nervura(s) livre(s); idioblasto presente(s); pina ou pínula(s) contínua(s)/subséssil(eis)/dimidiado/glabro(s)/na(s) amba(s) superfície(s). Tipo de esporângio: leptosporângio pedicelado(s)/glabro(s). Esporângio: ânulo vertical/com/indúsio/glabro(s). Esporo: trilete rugada(s)/à/tuberculada(s).

  • Provided by: [C].Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    • Source: [
    • 1
    • ]. 

    Distribution

    Terrestrial along shaded wet streams banks, seasonal evergreen forests, lowland and lower montane rain forests; 100–600 m. Mexico; Guat, Bel, Hond, Salv, Nic, CR, Pan; Gr & L Ant; Col, Ven, Trin, Tob, Guy, Sur, Fr Gui, Ec, Peru, Braz, Bol.

  • Provided by: [B].Memoirs of the New York Botanical Garden
    • Source: [
    • 5
    • ]. 

    Rare, on river banks in forest.

  • Provided by: [B].Memoirs of the New York Botanical Garden
    • Source: [
    • 6
    • ]. 

    Distribution Map

     
    • Native distribution
    Found in
    • Southern America Brazil Acre
    • Amapí
    • Amazonas
    • Parí
    • Rondônia
    • Roraima
    • Tocantins
    • Bahia
    • Ceará
    • Paraába
    • Pernambuco
    • Paraní
    • Santa Catarina
    • Minas Gerais
    • São Paulo
    • Goiás
    • Mato Grosso

     Information From

    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A Missouri Botanical Garden
    Memoirs of the New York Botanical Garden
    https://www.nybg.org/
    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.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    https://floradobrasil.jbrj.gov.br
    The Brazilian Flora Group (2018): Brazilian Flora 2020. http://dx.doi.org/10.1590/2175-7860201869402 Dataset/Checklist: https://ckan.jbrj.gov.br/dataset/thebrazilfloragroup_feb2018
    • C Group Brazil Flora, REFLORA Program
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    W. D. Stevens, C. Ulloa Ulloa, A. Pool & O. M. Montiel. 2001–. Flora de Nicaragua, Tropicos Project. Loaded from Tropicos Project: October 2017
    • D Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • E Missouri Botanical Garden
    Pteridaceae
    http://www.worldfloraonline.org/organisation/Pteridaceae
    World Flora Online Data. 2022.
    • F CC0 1.0 Universal (CC0 1.0).
    World Flora Online Consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2017.
    • G CC0 1.0 Universal (CC0 1.0).