Rhizomes compact, stout, ascending, 3–5 mm diam.; rhizome scales ovate-lanceolate to linear-lanceolate, concolorous tan, entire; fronds to 32 cm tall, clumped; stipes 1/3–1/2 the frond length, abscised old fronds leaving 1–1.5 cm long stipe bases, castaneous, grooved, sparsely scaly near base, sparsely yellow farinose throughout, var. palmeri with white jointed hairs 1.5–2 mm long; blades 2–3-pinnate-pinnatifid, broadly deltate to pentagonal (or ovate-lanceolate), 5–13 cm wide, the basiscopic pinnules of the basal pinna pair somewhat to greatly exaggerated; pinnae 6–12 pairs, segments rounded to oblong; adaxial surfaces generally glabrous or with scattered jointed white hairs 0.4–1 mm long, but sparse, long, white hairs along the axes, major veins, and blade margins; abaxial surfaces densely yellow farinose (but not continuous to scattered), with scattered long segmented white hairs on axes, major veins, and blade margins; sori at vein ends, laminar margins glabrous, recurved with firm, modified, 0.5 mm wide false indusia on tips of smaller segments, continuous on larger segments, entire, glabrous or strongly fimbriate-ciliate; sporangia 32-spored; spores black. Rhizome stout, ascending; rhizome scales 2 mm wide, 4 mm long, light brown, ovate-lanceolate, concolorous, margin entire; fronds to 32 cm tall, clumped; stipe 1/3-½ the frond length, castaneous, grooved, sparsely scaly near base, sparsely yellow farinose throughout, abscised old fronds leaving 1-1.5 cm long stipe bases; blade tripinnate to tripinnate-pinnatifid, broadly deltate to pentagonal, the basiscopic pinnules of the basal pinna pair greatly exaggerated; upper surface of lamina generally glabrous but sparse, long, white hairs along the axes and major veins and blade margin; lower surface densely yellow farinose, with long segmented hairs on axes and major veins and blade margin; sori at vein ends, laminar margin recurved with modified 0.5 mm wide false indusium; spores black. Roadside banks and wooded river banks; Putla, Sola de Vega, Villa Alta; 4501050 m. Mexico (Mex, Gro, Oax); Guat, Salv. Terrestrial on banks and among rocks in dryish woods; 450–2550 m. Mexico; Guat, Salv. Roadside banks and wooded river banks; Putla, Sola de Vega, Villa Alta; 4501050 m. Mexico (Mex, Gro, Oax); Guat, Salv. Terrestrial on banks and among rocks in dryish woods; 450–2550 m. Mexico; Guat, Salv. Terrestrial on banks and among rocks in dryish woods; 450–2550 m. Mexico; Guat, Salv. Rhizomes compact, stout, ascending, 3–5 mm diam.; rhizome scales ovate-lanceolate to linear-lanceolate, concolorous tan, entire; fronds to 32 cm tall, clumped; stipes 1/3–1/2 the frond length, abscised old fronds leaving 1–1.5 cm long stipe bases, castaneous, grooved, sparsely scaly near base, sparsely yellow farinose throughout, var. palmeri with white jointed hairs 1.5–2 mm long; blades 2–3-pinnate-pinnatifid, broadly deltate to pentagonal (or ovate-lanceolate), 5–13 cm wide, the basiscopic pinnules of the basal pinna pair somewhat to greatly exaggerated; pinnae 6–12 pairs, segments rounded to oblong; adaxial surfaces generally glabrous or with scattered jointed white hairs 0.4–1 mm long, but sparse, long, white hairs along the axes, major veins, and blade margins; abaxial surfaces densely yellow farinose (but not continuous to scattered), with scattered long segmented white hairs on axes, major veins, and blade margins; sori at vein ends, laminar margins glabrous, recurved with firm, modified, 0.5 mm wide false indusia on tips of smaller segments, continuous on larger segments, entire, glabrous or strongly fimbriate-ciliate; sporangia 32-spored; spores black. Rhizome stout, ascending; rhizome scales 2 mm wide, 4 mm long, light brown, ovate-lanceolate, concolorous, margin entire; fronds to 32 cm tall, clumped; stipe 1/3-½ the frond length, castaneous, grooved, sparsely scaly near base, sparsely yellow farinose throughout, abscised old fronds leaving 1-1.5 cm long stipe bases; blade tripinnate to tripinnate-pinnatifid, broadly deltate to pentagonal, the basiscopic pinnules of the basal pinna pair greatly exaggerated; upper surface of lamina generally glabrous but sparse, long, white hairs along the axes and major veins and blade margin; lower surface densely yellow farinose, with long segmented hairs on axes and major veins and blade margin; sori at vein ends, laminar margin recurved with modified 0.5 mm wide false indusium; spores black. Rhizome stout, ascending; rhizome scales 2 mm wide, 4 mm long, light brown, ovate-lanceolate, concolorous, margin entire; fronds to 32 cm tall, clumped; stipe 1/3-½ the frond length, castaneous, grooved, sparsely scaly near base, sparsely yellow farinose throughout, abscised old fronds leaving 1-1.5 cm long stipe bases; blade tripinnate to tripinnate-pinnatifid, broadly deltate to pentagonal, the basiscopic pinnules of the basal pinna pair greatly exaggerated; upper surface of lamina generally glabrous but sparse, long, white hairs along the axes and major veins and blade margin; lower surface densely yellow farinose, with long segmented hairs on axes and major veins and blade margin; sori at vein ends, laminar margin recurved with modified 0.5 mm wide false indusium; spores black.General Information
Source: [
Distribution
Source: [
Memoirs of the New York Botanical Garden
Distribution