Bommeria pedata (Sw.) E.Fourn.

  • 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

    Bommeria pedata (Sw.) E.Fourn.

  • Description

    Species Description - Rhizome short-creeping; rhizome scales linear-lanceolate to ovate-lanceolate, concolorous to bicolorous with age, light brown with dark center and narrow light brown margin, 3-4 mm long, 0.8-1.0 mm wide with long cilia (0.3 mm long); fronds 1 mm apart; stipe ½-2/3 the frond length, castaneous to atropurpureous, terete to sulcate at apex, glabrous except for scattered scales and hairs (0.5-1.0 mm long) at base; blade pentagonal, pedately divided, the basal pair of pinnae pinnatifid, with greatly exaggerated basis-copic pinnatifid pinnule, remainder of blade pinnatifid or with one pair of suprabasal pinnatifid pinnae; lobes entire, rounded, the margin slightly recurved; lamina densely hispid on lower surface with stiff, unicellular, acicular hairs 0.3-0.8 mm long and scales 0.1-0.5 mm wide (2-8 cells across base), upper surface with sparse, unicellular, acicular hairs (0.2-0.5 mm long); veins free, endings enlarged; sori along the terminal 2/3-¾ the vein length; spores tan, brown or gray, with reticulate markings.

  • Discussion

    Hemionitis pedata Swartz, Syn. fil. 20, 209, t. 1, f. 3. 1806. Gymnogramma pedata (Swartz) Kaulfuss, Enum. filie. 69. 1824. Neurogramma pedata (Swartz) Link, Fil. spec. 139. 1841. Gymnopteris pedata (Swartz) Christensen, Index filie. 341. 1905. Type. Locality and collector not stated; according to Haufler (1979) perhaps collected by Née in Mexico and sent by Cavanilles to Swartz. (Presumably at S.) Bommeria hispida (Kuhn) Underwood, known from the western U.S., Mexico south to Jalisco and San Luis Potosí, and a disjunct collection from Nicaragua, has simliar free veins but has a long-creeping rhizome (fronds 7-10 mm distant), wide lower scales, and dimorphic lower hairs (acicular and coiled).

  • Distribution

    Terrestrial and epipetric on rocky banks in open mesic and xeric woods; 100 m; Centro, Choapan, Ixtlán, Juquila, Mixe, Pochutla, Sola de Vega, Tlacolula, Tlaxiaco, Yautepec; 50-2400 m. Mexico (BC, Son, Chih, Dgo, Sin, Nay, Zac, Jal, Col, Mich, Gro, Mor, Mex, DF, SLP, Ver, Pue, Oax, Chis); Guat to CR.

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