Antrophyum lanceolatum (L.) Kaulf.

  • Authority

    Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.

  • Family

    Pteridaceae

  • Scientific Name

    Antrophyum lanceolatum (L.) Kaulf.

  • Description

    Species Description - Rhizome short-creeping, ca. 1 mm diam.; rhizome scales clathrate, lance-attenuate, 2-3 mm long, 0.5-0.8 mm wide; fronds 7-23 cm long, clumped; stipe lacking; blade linear-oblanceolate to linear-elliptic, entire, 9-12(-18) mm wide, apex acuminate, 1.5-2.0 mm wide at base, glabrous, papyraceous; veins netted, 3-4 rows of oblique areoles, veins near margin forming areoles; sori on surface or in shallow grooves, following most or all the netted vein pattern, at least in upper 2/3 of the blade; paraphyses absent; spores tetrahedral, cream-white.

  • Discussion

    Hemionitis lanceolata Linnaeus, Sp. pl. 2: 1077. 1753. Polytaenium lanceolatum (Linnaeus) Benedict, Bull. Torrey Bot. Club 38: 169. 1911. Type. Uncertain, see A. R. Smith (1981). Antrophyum feei Schaffner ex Fée, Mém. foug. 7: 42. 1857. Type. Mexico. [Veracruz:] “Circa Huatusco,” Schaffner 133 (P?; isotype K!). Antrophyum lanceolatum often goes under the name of A. feei, the type of which is also from Mexico and seems to be the same as this species. Material from the West Indies is often somewhat larger and with heavier texture; the variation is probably not significant taxonomically.

  • Distribution

    Epiphytic in wet forests on Atlantic slope; Ixtlán; Juchitán [=Veracruz, Wendt et al. 4014 (NY)]; 400-1400 m. Mexico (Ver, Oax, Chis), Guat to CR; WI, Trin; Braz.

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