Pteridium feei (W.Schaffn. & Fée) Faull
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Authority
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
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Family
Dennstaedtiaceae
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Scientific Name
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Description
Species Description - Fronds 0.5-1 m long, lacking free lobes between segments; rachis slightly to strongly pubescent; penultimate axes pubescent abaxially with hairs white and others scattered, clear brown, straight, 1-1.5 mm long, adaxially with hairs short, white, and others short, red-tipped, glandular, in medial groove only; midveins terete; laminar surface abaxially with hairs dense, 0.50.8 mm long, white, on veins only, surface between veins glabrous, adaxially with only hairs scattered to rare (only along reflexed margin), 0.5-0.8 mm long, white; false indusium 0.5-0.8 mm wide with erose margin, with scattered to numerous long cilia.
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Discussion
Pteris feei Schaffner ex Fée, Mém. foug. 8: 73. 1857. Pteridium aquilinum (Linnaeus) Kuhn var. feei (Schaffner ex Fée) Maxon ex Yuncker, Publ. Field Mus. Nat. Hist., Bot. Ser. 17: 308. 1938. Syntypes. Mexico. [Veracruz:] Huatusco, Schaffner 138, 141; Popocatépetl, Schaffner 286 (P?). Pteridium feei is distinguished by the possession of the full suite of characters as given in the key and description (no free lobes, non-arachnoid hairs on veins only, broad ciliate indusia, long (1.0-1.5 mm) straight, clear, brown hairs, no minute glandular hairs adaxially or minute clavate hairs abaxially). For the hybrids with the other two species, see discussion under those taxa.
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Distribution
Open, disturbed areas of higher elevations; Centro, Etla, Ixtlán, Juquila, Miahuatlán, Mixe, Pochutla, Sola de Vega, Teotitlán, Tlaxiaco; 1800-3050 m. Mexico (Dgo, Nay, Jal, Mich, Gro, Gto, Mex, Mor, SLP, Hgo, Ver, Pue, Oax, Chis); Guat, Salv, Hond.
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