Trichomanes petersii A.Gray

  • Authority

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

  • Family

    Hymenophyllaceae

  • Scientific Name

    Trichomanes petersii A.Gray

  • Description

    Species Description - Rhizomes short- to long-creeping, slender, 0.1 mm diam.; rhizome hairs dense, dark brown, 0.1 mm long; roots absent; fronds 1 cm long, distant; stipes 1/4 to nearly 1/2 the frond length; blades ovate, 0.4 cm wide, bases cuneate, apices rounded, 0.3–0.5 mm long, margins membranaceous, with dark reddish brown forked or stellate hairs; veins free, false veins parallel to the true veins; sori one per blade, apical; involucres immersed in blade tissue, with mouths flaring, not bilabiate, concolorous.

  • Discussion

    Microgonium petersii (A. Gray) Bosch, Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk. 9(6): 7. 1861. Hemiphlebium petersii (A. Gray) Prantl, Unters. Morph. Gefa¨sskrypt. 1: 46. 1875. Didymoglossum petersii (A. Gray) Copel., Philipp. J. Sci. 67: 78. 1938. Type. U.S.A. Alabama: Hancock Co. [Winston Co.], near Sipsey River, 1 Jun 1853, Peters s.n. (not found in GH by Wessels Boer; topotypes collected by Peters in B, F, G, GH!, K!, L, MO, U, UC!, US-says Winston Co.).

    Trichomanes schaffneri Schltdl., Linnaea 26: 368. 1853 [1854]. Type. Mexico. [Veracruz:] Huatusco, Schaffner s.n. (B).

    Trichomanes petersii is closely related to T. ovale (q.v.), which differs in having dark-lipped involucres and epiphytic habitat.

  • Distribution

    Walls of calcareous sinkholes; 1400–2200 m. Se USA; Mexico; Guat, Hond, Salv, Nic, CR.

    Mexico North America| Costa Rica South America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Guatemala Central America|