Trichomanes angustatum Carmich.

  • 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 angustatum Carmich.

  • Description

    Species Description - Closely related to T. capillaceum, differing mainly in the slightly broader ultimate segments ca. 0.5–0.7 mm wide (vs. 0.1–0.4 mm); 2n=144 (Tristan da Cunha).

  • Discussion

    Vandenboschia angustata (Carmich.) Copel., Philipp. J. Sci. 73: 466. 1941. Type. Tristan da Cunha, Carmichael s.n. (K!; isotype BM!). Trichomanes tenerum Spreng., Syst. Veg., ed. 16, 4: 129. 1827. Vandenboschia tenera (Spreng.) Copel., Philipp. J. Sci. 67: 53. 1938. Type. Brazil. s. coll. s.n. (LZ destroyed).

    The T. angustatum-capillaceum complex needs monographic attention before names can be applied with confidence. The few specimens cited here seem to have consistently wider segments and are here recognized as distinct from T. capillaceum.

    Distribution and ecology - Usually epiphytic on tree ferns in wet forests; widespread in the American tropics, but exact distribution uncertain because of problems in circumscription and confusion with T. capillaceum; elevation not known for Mexican collections; 250–2000 m in Greater Antilles, 2600 m in CR. Mexico; Guat, Hond; Gr Ant; Col, s Braz, Bol, Parag, Uru, nw Arg; Tristan da Cunha.