Diplazium cristatum (Desr.) Alston

  • Authority

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

  • Family

    Athyriaceae

  • Scientific Name

    Diplazium cristatum (Desr.) Alston

  • Description

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    Species Description - Similar to D. werckleanum except: rhizome scales 5–7 x 1–1.5 mm; stipes 30–55 cm long; blades pinnate-pinnatifid, 30–45(–100) cm long; pinnae (5–)12–13 x (1.5–)2.5–3.5(–4.5) cm, deeply lobed 1/2–3/4 of the distance to costae, lobes serrate, basal acroscopic lobe not free; sori with subentire indusia 4–9 x 0.8–1 mm; 2n=ca. 164 (Jam, Trin).

  • Discussion

    Meniscium cristatum Desr. in Lamarck, Encycl. 4: 94. 1797. Type. Martinique. Martin s.n. (P-Lam.).

    Asplenium arboreum Willd., Sp. Pl., ed. 4, 5(1): 320. 1810. Diplazium arboreum (Willd.) C. Presl, Suppl. Tent. Pterid. 114. 1836. Type. Venezuela. Caracas, Bredemeyer s.n. (B-Willd. 19892-1!).

    Asplenium denticulosum Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 323. 1811. Diplazium denticulosum (Desv.) C. Chr., Index Filic. 231. 1905. Type. “In America calidiore,” Dombey s.n. (P-JU!; isotype P!).

    Asplenium shepherdii Spreng., Nova Acta Phys.-Med. Acad. Caes. Leop.- Carol. Nat. Cur. 10: 231, t. 17, f. 5, 6. 1821. Type. Jamaica. Shepherd s.n. (LZ, destroyed; isotype PH).

    Citation of this species from Nayarit by Mickel and Beitel (1988) is the result of misidentification of a specimen of D. lonchophyllum. Several other specimens cited as D. cristatum from Oaxaca (Mickel & Beitel, 1988), from the Sierra de Miahuatla´n, are probably also D. lonchophyllum (Mickel 5026, NY, UC, 6010, NY, juvenile, 6019, NY), but both species apparently occur in that area. Two of the four specimens cited by Palacios Rios (1992) as D. cristatum are D. lonchophyllum: Conzatti 802, MEXU; Palacios Rios & Herna´ndez M. 610, XAL; we have not seen the other two (Castillo & Medina 4288, XAL, and Nee 22582, F, XAL), but their identity needs verification). See discussion under D. werckleanum for a discussion of differences and hybrids with that species.

  • Distribution

    Terrestrial in montane forests of the Isthmus and along the Pacific slope; 1300–2700 m. Mexico; Guat, Bel, Hond, Nic, CR, Pan; Gr & L Ant; Col, Ven, Trin, Guy, Sur, Fr Gui, Ec, Peru, s Braz, Bol, Parag, n Arg. Also cited from El Salvador by Adams (in Davidse et al., 1995: 233), but the specimen (Standley 21742, MO!) appears to us to be D. lonchophyllum.

    Mexico North America| El Salvador Central America| Argentina South America| Bolivia South America| Brazil South America| Peru South America| Amazonas Ecuador South America| French Guiana South America| Suriname South America| Guyana South America| Trinidad and Tobago South America| Venezuela South America| Amazonas Colombia South America| West Indies| Panama Central America| Costa Rica South America| Nicaragua Central America| Honduras Central America| Belize Central America| Guatemala Central America|