Monographs Details: Thelypteris cheilanthoides var. cheilanthoides
Authority: Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Family:Thelypteridaceae
Description:Distribution and Ecology - Distribution. Wet pine-oak woods and seepage areas, especially along streams and roadside ditches; Centro, Ixtlán, Pochutla; 1800-2500 m. Mexico (Jal, Mich, Gro, Mex, Ver, Pue, Oax, Chis); Guat to Pan; Jam, Hisp; Col & Ven to Bol, s Braz. Oaxaca collections: 1421, 4223, 5040, 5549; Harriman 14373 (NY); Morton & Makrinius 2543 (US); A. Smith 400, 401, 423, 458 (UC).

Discussion:Phegopteris amplificata Fée, Mém. foug. 8: 89. 1857. Dryopteris amplificata (Fée) Christensen, Index filic. 251. 1905. Type. Mexico. Córdoba, Schaffner 219 (P?, possible authentic specimen, Schajfner s.n., P!). Complete synonymy cited in A. R. Smith (1983). This species is distinguished from others in Oaxaca by the persistent indusia, somewhat succulent blades with veins immersed, and basiscopic segment of larger pinnae somewhat elongate. Variety cheilanthoides is further distinguished by the revolute segment margins and septate hairs on rachis and costae below. These last two characters and n = 29 distinguish it from var. mucosa.
Distribution:Mexico North America| Guatemala Central America| Panama Central America| Jamaica South America| West Indies| Colombia South America| Venezuela South America| Bolivia South America| Brazil South America|