Rhizomes horizontal, compact, short-creeping, 6–9 mm diam.; rhizome hairs orange; fronds erect, (14–)20–60 cm long; stipes 1/2–3/4 the frond length, 1–1.5 mm diam., stramineous, hirsute; blades deltate to deltate-ovate or narrowly oblong, 2- pinnate, rarely bipinnate-pinnatifid, 6–15 cm wide, subcoriaceous, mostly catadromous; pinnae 8–12 pairs, subopposite to alternate, pinnules narrowly adnate, subcordate at base, segments ovate-obtuse, lobes rounded, hirsute; veins free; fertile pinnae remote from the sterile pinnae, shorter than or usually equal to the sterile blades in height; spores striate, ridges subverruculate. Rhizome horizontal, compact, short-creeping, 6-9 mm diam.; rhizome hairs orange; fronds erect, 14-49 cm tall; stipe ½-¾ the frond length, stout, 1.0-1.5 mm diam., stramineous, hirsute; blade deltate to deltate-ovate or narrowly oblong, bipinnate, rarely bipinnate-pinnatifid, subcoriaceous, to 15 cm wide, mostly catadromous; pinnae 8-12 pairs, subopposite to alternate; pinnules narrowly adnate, subcordate at base, ovate-obtuse, lobes rounded, hirsute; veins free; fertile pinnae remote from the sterile pinnae, shorter than or usually equal to the sterile blade in height; spores tetrahedral-globose, striate, ridges sub-verruculate; chromosome numbers n = 76, and presumably 38 and 152, plus hybrids between ploidal forms with 38II + 38I and 38II + 114I. Rare on moist banks in pine-oak woods on Pacific side of the state; Juquila, Putla; 750-1800 m. Mexico (Nay, Jal, Mich, Gro, Mex, Oax). Rare on moist banks in pine-oak woods; 600– 1900 m. Mexico. Rare on moist banks in pine-oak woods on Pacific side of the state; Juquila, Putla; 750-1800 m. Mexico (Nay, Jal, Mich, Gro, Mex, Oax). Rare on moist banks in pine-oak woods; 600– 1900 m. Mexico. Rare on moist banks in pine-oak woods; 600– 1900 m. Mexico. Rhizomes horizontal, compact, short-creeping, 6–9 mm diam.; rhizome hairs orange; fronds erect, (14–)20–60 cm long; stipes 1/2–3/4 the frond length, 1–1.5 mm diam., stramineous, hirsute; blades deltate to deltate-ovate or narrowly oblong, 2- pinnate, rarely bipinnate-pinnatifid, 6–15 cm wide, subcoriaceous, mostly catadromous; pinnae 8–12 pairs, subopposite to alternate, pinnules narrowly adnate, subcordate at base, segments ovate-obtuse, lobes rounded, hirsute; veins free; fertile pinnae remote from the sterile pinnae, shorter than or usually equal to the sterile blades in height; spores striate, ridges subverruculate. Rhizome horizontal, compact, short-creeping, 6-9 mm diam.; rhizome hairs orange; fronds erect, 14-49 cm tall; stipe ½-¾ the frond length, stout, 1.0-1.5 mm diam., stramineous, hirsute; blade deltate to deltate-ovate or narrowly oblong, bipinnate, rarely bipinnate-pinnatifid, subcoriaceous, to 15 cm wide, mostly catadromous; pinnae 8-12 pairs, subopposite to alternate; pinnules narrowly adnate, subcordate at base, ovate-obtuse, lobes rounded, hirsute; veins free; fertile pinnae remote from the sterile pinnae, shorter than or usually equal to the sterile blade in height; spores tetrahedral-globose, striate, ridges sub-verruculate; chromosome numbers n = 76, and presumably 38 and 152, plus hybrids between ploidal forms with 38II + 38I and 38II + 114I. Rhizome horizontal, compact, short-creeping, 6-9 mm diam.; rhizome hairs orange; fronds erect, 14-49 cm tall; stipe ½-¾ the frond length, stout, 1.0-1.5 mm diam., stramineous, hirsute; blade deltate to deltate-ovate or narrowly oblong, bipinnate, rarely bipinnate-pinnatifid, subcoriaceous, to 15 cm wide, mostly catadromous; pinnae 8-12 pairs, subopposite to alternate; pinnules narrowly adnate, subcordate at base, ovate-obtuse, lobes rounded, hirsute; veins free; fertile pinnae remote from the sterile pinnae, shorter than or usually equal to the sterile blade in height; spores tetrahedral-globose, striate, ridges sub-verruculate; chromosome numbers n = 76, and presumably 38 and 152, plus hybrids between ploidal forms with 38II + 38I and 38II + 114I.General Information
Source: [
Distribution
Source: [
Memoirs of the New York Botanical Garden
Distribution
