Lophosoria quadripinnata (J.F.Gmel.) C.Chr.

  • Authority

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

  • Family

    Dicksoniaceae

  • Scientific Name

    Lophosoria quadripinnata (J.F.Gmel.) C.Chr.

  • Description

    Species Description - Stem creeping, densely clothed with long, golden hairs; fronds 2-4 m long; stipe mostly stramineous, nearly black and very hairy at base with long (to 2 cm), golden hairs, lacking spines; blade tripinnate-pinnatifid to quadripinnate, subcoriaceous; pinnae subsessile to petiolulate, to 13 cm long, pinnules stalked, to 2 mm; upper surface nearly glabrous, lustrous, hairs limited to axes and major veins; lower surface with orange-tan hairs (1-2 mm long) especially on midveins, to nearly glabrous; sterile veins simple; sori medial, round, paraphyses abundant in sori (1.0 mm), indusium lacking.

  • Discussion

    Polypodium glaucum Swartz, Prodr. veg. ind. occ. 134. 1788, nom. illeg., non Thunberg, 1784. Polypodium quadripinnatum Gmelin, Syst. Nat. 2(2): 1314. 1791 [1792], nom. nov. Polypodium pruinatum Swartz, J. Bot. (Schrader) 1800(2): 29. 1801, nom. nov. superfl. Lophosoria pruinata (Swartz) Presl, Gefassbiindel Farm 36. 1847. Alsophila quadripinnata (Gmelin) Christensen, Index filie. 47. 1905. Type. Jamaica. Swartz s.n. (S?). Trichosorus glaucescens Liebmann, Mexic. bregn. 283 (seors. 131). 1849. Lectotype (chosen by A. R. Smith, 1981: 144). Mexico. Oaxaca: “Inter Talea and Hac. de Sta. Gertudes,” Liebmann [FI. Mex. 877] (C!). Trichosorus densus Liebmann, Mexic. bregn. 284 (seors. 132). 1849. Lectotype (chosen by A. R. Smith, 1981: 144). Mexico. Puebla: “Pr. Chinautla,” Liebmann [Fl. Mex. 881] (C!, photo US, frag. NY!). Trichosorus frigidus Liebmann, Mexic. bregn. 1: 284 (seors. 132). 1849. Lectotype (chosen by A. R. Smith, 1981: 144). Mexico. Oaxaca: “Cerro de Sempoaltepec,” Liebmann [Pl. Mex. 884] (C!, photo US). A. R. Smith (1981) reported that the fungus Acrospermum candidum Setchell (Mycologia 16: 242. 1924) was described as growing on Lophosoria, but he had seen it in Chiapas only on the type specimen. In Oaxaca, about 40% of the specimens have this fungus, which is white, small (1- 1.5 mm), and club-shaped. We have also seen it on specimens from Guerrero and Hidalgo. Several other species of fungi were seen growing with it on the upper blade surface.

  • Distribution

    Wet upper montane forests and cloud forests; Ixtlán, Miahuatlán, Mixe, Pochutla, Villa Alta; 1050-3050 m. Mexico (Hgo, Ver, Mex, Pue, Gro, Oax, Chis); Guat to Pan; Gr Antill, Trin; Col & Ven to Chile.

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