Dennstaedtia bipinnata (Cav.) Maxon

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Dennstaedtiaceae

  • Scientific Name

    Dennstaedtia bipinnata (Cav.) Maxon

  • Description

    Species Description - Rhizomes long-creeping, branched, 5–10 mm diam., hairy; fronds 2–3 m long, clumped; stipes 1/2 the blade length, lacking buds at the base; blades deltate, 1–1.5 m wide; fronds 3–4-pinnate; texture coriaceous to firm herbaceous; proximal pinnules stalked, not especially reduced, basal segments of pinnules of central pinnae alternate, unequal in size, axes of penultimate segments with wings on adaxial surfaces; sterile vein tips slender; laminae glabrous adaxially, hairs scattered abaxially, mostly at axis intersections, 1 mm long, clear brown, spreading and straight; indusia cylindrical to subcylindrical, 0.8 mm deep, 0.8–1 mm wide; 2n=188 (Jam).

  • Discussion

    Dicksonia bipinnata Cav., Descr. Pl., 174. 1801. Dicksonia adiantoides Humb. & Bonpl. ex Willd., Sp. Pl., ed. 4, 5(1): 488. 1810, nom. superfl. Dennstaedtia adiantoides (Humb. & Bonpl. ex Willd.) T. Moore, Index Fil. xcvii. 1857. Type. Puerto Rico. Ventenat s.n. (MA; isotype B-Willd. 20165-1!, frag. US!).

    Unverified, Doubtful, or Mistaken Reports. Gro (Vela´zquez 282, FCME, cited by Lorea-Herna´ndez & Vela´zquez M., 1998, but not verified).

    The lustrous, coriaceous blades and cylindrical indusia distinguish this species.

  • Distribution

    Wet montane forests; 450–1300 m. USA (Fla); Mexico; Guat, Bel, Hond, Salv, Nic, CR, Pan; Gr Ant; Col, Ven, Trin, Ec, Peru, Bol.

    Mexico North America| Bolivia South America| Peru South America| Amazonas Ecuador South America| Trinidad and Tobago South America| Venezuela South America| Amazonas Colombia South America| Panama Central America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Belize Central America| Guatemala Central America|