Anemia tomentosa var. mexicana (C.Presl) Mickel
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Authority
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
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Family
Anemiaceae
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Scientific Name
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Description
Species Description - Rhizomes horizontal, compact, short-creeping, ca. 7 mm diam.; rhizome hairs orange; fronds erect, 9–39 cm tall; stipes 1/2–2/3 the frond length, 0.9–2.2 mm diam., stramineous to light brown, hirsute; blades deltate-ovate, bipinnate-pinnatifid, 4.6–10.7 cm wide, chartaceous to subcoriaceous; pinnae 6–13 pairs, opposite to subopposite, pinnules narrowly adnate, ovate, segment lobes acute; blade surfaces hirsute; veins free; fertile pinnae approximate to or remote from the sterile pinnae, about equal to the sterile blades in height; spores striate, ridges smooth, close; 2n=152 (Jal), 2n=228 (Oax).
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Discussion
Anemia fulva (Cav.) Sw. ? mexicana C. Presl, Suppl. Tent. Pterid. 84. 1845, based on A. flexuosa var.? [sic] anthriscifolia sensu Kunze, Linnaea 18: 308. 1844. Type. “In regione subtropica Mexico orientalis, Leibold pl. mex. exs. sine num.” (LZ-destroyed).
Anemia distans Fe´e, Me´m. Foug. 9: 41. 1857. Type. Mexico. Oaxaca: Talea, Galeotti 6567bis (BR!).
Unverified, Doubtful, or Mistaken Reports. Ags (Gonza´lez- Adame 612, HUAA, cited by Siqueiros-Delgado & Gonza´lez-Adame, 2004, but not verified). BCN (reported by Knobloch & Correll, 1962, and Wiggins, 1980, as Anemia anthriscifolia). The two cytotypes of A. tomentosa in Mexico apparently are allopatric and can be distinguished by spore size. The hexaploid, which occurs in Oaxaca, has spores 76–94 (avg. ca. 81) µm in diameter, whereas material from Jalisco (tetraploid) and Sonora has spores 69–79 (avg. ca. 74) µm in diameter. Anemia tomentosa is distinguished in Mexico by its thin texture and bipinnate-pinnatifid blades. In Mexico it most closely resembles A. karwinskyana, which is distinct in its catadromous architecture and has segments that are more obtuse and rounded rather than toothed