Diplazium Sw.
  • J. Bot. (Schrader) 1800(2): 4, 61, 61. 1801.


Cite taxon page as 'WFO (2020): Diplazium Sw. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000011939. Accessed on: 05 Dec 2020'

General Information

DIPLAZIUM Sw.Terrestres; rizoma generalmente suberecto a erecto, a menudo arborescente, escamoso; hojas monomorfas o ligeramente dimorfas, no articuladas; pecíolo generalmente escamoso en la base; lámina generalmente 1-pinnada a 1–3-pinnado-pinnatífida, a veces 4-pinnada, raramente simple o pinnatífida, algunas especies producen yemas prolíferas en las axilas de las pinnas o pínnulas, abaxialmente glabra o con escamas doradas a cafés sobre el raquis, las costas y las cóstulas, algunas veces también con tricomas septados, adaxialmente glabra o con tricomas y papilas cortas en los canales del raquis, las costas y las cóstulas; nervios libres, raramente formando aréolas pero sin nérvulos incluidos; soros lineares u oblongos, generalmente sobre el lado acroscópico del nervio, al menos algunos soros dorso con dorso a lo largo del mismo nervio (diplazioide), indusio raramente ausente, entero a fimbriado-ciliado, paráfisis ausentes, esporangios sobre pedículos 1/3 de la longitud de la cápsula, esporas monoletas.Género con 350–400 especies. Cosmopolita, ca 150 especies en el Nuevo Mundo; 23 especies se encuen­tran en Nicaragua y se podría encontrar 1 especie adicional. Este género está especialmente relacionado con Athyrium y algunos géneros como Callipteris Bory, Cornopteris Nakai y Deparia Hook. & Grev. presentes en el Viejo Mundo, los cuales han sido segregados de Diplazium y Athyrium.D.B. Lellinger. Río Palenque fern notes. Selbyana 2: 283–285. 1978; C.D. Adams. Eleven new species, a new variety, and a new varietal combination in the fern genera Asplenium and Diplazium in Central America. Novon 2: 290–298. 1992; L. Pacheco y R.C. Moran. Monograph of the Neotropical species of Callipteris with anastomosing veins (Woodsiaceae). Brittonia 51: 343–388. 1999.

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

    Plants terrestrial, evergreen, medium-sized to large. Rhizome creeping to ascending or erect, sometimes subarborescent, brown or nearly black, dictyostelic, ± scaly; scales subulate, lanceolate, or broadly lanceolate, sometimes ovate and adpressed or peltate, margin entire, sometimes sparsely toothed and often narrow, black, brown, yellow-brown, or dark brown to black; fronds caespitose, distant or approximate. Stipe brown or black and scaly at base, scales similar to those on rhizome, and upward gradually glabrescent or with sparse scales, sometimes base and upward prickly, grooved adaxially, not hairy. Lamina mostly broadly ovate, oblong, or deltoid, sometimes broadly lanceolate, usually pinnate to tripinnate-pinnatifid under acuminate and pinnatifid apex, mostly bipinnate or bipinnate-pinnatilobate to bipinnate-pinnatipartite. Pinnae lanceolate, broadly lanceolate, or oblong-lanceolate, base mostly or nearly symmetrical, lower pinnae not reduced or slightly reduced; ultimate pinnules mostly lanceolate or broadly lanceolate, sometimes ovate or oblong, base stalked or sessile, truncate, rounded, or subcordate, margin entire or serrate, apex acute or acuminate to long acuminate, sometimes rounded or truncate; veins free, rarely anastomosing with a row of areoles along costa and costule; veinlets simple or forked, ascending, lower veinlets often curved. Lamina herbaceous or papery, rarely leathery, usually glabrous, rachis, costae, and costules abaxially sometimes with sparse subulate or lanceolate scales, rarely prickly; rachis, costae, and costules adaxially grooved between knife-edgelike ridges, ridges interrupted at insertion of higher-order frond axes, so grooves continuous, both surfaces of costa often with minute glandular hairs. Sori linear, oblong, or ovate, mostly single or less often double on basal acroscopic veinlets, costular, medial, supramedial, or from base to end of veinlets; indusia membranous or thickly membranous, grayish white or brown, vaulted or ovoid when mature, and irregularly rupturing on back, or compressed, linear, opening acroscopically, persistent or caducous. Spores bilateral, monolete, mostly reniform or bean-shaped, sometimes hemispherical, rarely spherical; perispore generally prominent, ornamentation mostly rugate, glabrous or aculeate, granular, clathrate, reticulate, rarely ridged. n = 41.

  • Provided by: [E].Flora Of CHina @ efloras.org
    • Source: [
    • 2
    • ]. 

    Literature

    SELECTED REFERENCES

    Johnson, D. M. 1986. Trophopods in North American species of Athyrium (Aspleniaceae). Syst. Bot. 11: 26--31. Kato, M. 1977. Classification of Athyrium and allied genera of Japan. Bot. Mag. (Tokyo) 90: 23--40.

  • Provided by: [F].Flora of North America @ efloras.org
    • Source: [
    • 3
    • ]. 

    Included Species

     Information From

    Athyriaceae
    World Flora Online Data. 2017.
    • 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
    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
    • D Missouri Botanical Garden
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E 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.
    • F Flora of North America Association
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • G CC0 1.0 Universal (CC0 1.0).