Pellaea ternifolia Fée

  • 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

    Pellaea ternifolia Fée

  • Description

    Species Description - Rhizome short, stout, compact; rhizome scales 5-6 mm long, 0.3-0.5 mm wide, thick (0.3 mm), bicolorous, linear, central portion dark reddish-brown, margin thin, whitish-tan, erose; fronds to 50 cm long, erect, monomorphic; stipe ¼-1/3 the frond length, atropurpureous to black, lustrous, glabrous, terete or plane on top; blade linear, bipinnate almost to tip; pinnae ternately divided, gray-green, segments linear to lanceolate, 16 mm long, 1-2 mm wide, entire, mucronate with 1 mm colorless tip, glabrous, coriaceous; margin reflexed, scarious, indusium 0.1 mm wide with papillate margin; spores tan.

  • Discussion

    Pteris ternifolia Cavanilles, Descr. pl. 266. 1802. Lec-totype (chosen by Christensen, Dansk Bot. Ark. 9: 22. 1937). Peru. Nr. Guamantanga, Née s.n. (MA; isotype F). Pellaea brandegeei C. C. Hall, Amer. Fern J. 37: 111, photo 112. 1947. Type. Mexico. Baja California Sur: Cape region, Sierra de la Laguna, 1893, Brandegee s.n. (UC; isotype US). For additional synonyms, see A. Tryon (1957). Pellaea ternifolia is distinct by its dark axes and ternate pinnae.

  • Distribution

    Dry, rocky slopes of mountains in central Oaxaca; oak or pine-oak forest, Bursera-Acacia or cacti associations; Etla, Juquila, Tlacolula; 1500-1850 m. Mexico (BC, Son, Chih, Coah, Dgo, Sin, Nay, Jal, Zac, Mich, Gro, Gto, Qro, Mex, DF, Mor, Tlax, SLP, Hgo, Ver, Pue, Oax, Chis); Guat, Salv, Nic; Hisp; Col & Ven to n Arg & Chile; Hawaii.

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