Ctenitis sloanei (Poepp.) C.V.Morton
Descripción
Rhizomes erect, caudices 4–5 cm diam.; fronds 1–1.5 m long; stipes stramineous to tan, 1⁄3–1⁄2 the frond length, to 70 cm X 10 mm, bases with dense, orangish to reddish tan, woolly, tangled, hair-like scales mostly 10–40 X 0.5–1 mm; blades chartaceous, yellowish green, deltate, 4-pinnate-pinnatifid at bases, 2-pinnate-pinnatifid distally, broadly deltate, 50–100 X 40–120 cm; rachises abaxially with scattered, stramineous to tan, lanceolate, flattened to somewhat inrolled scales mostly 1–2 mm long; pinnae to ca. 12 pairs, proximal ones stalked to 4 cm, the largest to 65 X 25 cm, basiscopically enlarged (unequally deltate, basiscopic pinnules longer than corresponding acroscopic ones), the largest basiscopic pinnules to 30 X 18 cm; segments entire or the largest ones serrate, subfalcate, rounded or subacute at tips, margins glandular-ciliate with hairs 0.1–0.2 mm; veins simple or 1-forked, reaching margins above the sinuses; indument on costae and costules abaxially of tan, lanceolate, flattish or sometimes basally inrolled, appressed scales 1–2 X 0.2–0.5 mm, most numerous in axils of pinnae and pinnules; laminae on and between veins abaxially with yellowish cylindrical and capitate glands ca. 0.1 mm long, adaxially glabrous or with sparse glands or glandular hairs; sori medial, exindusiate or with small, tan, fugacious, glandular indusia, often hidden in mature sori, sporangia often bearing a small glandular hair < 0.1 mm long below annuli; 2n=82 (Jam), 164 (Trin).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 33125, DS, MEXU, NY).A
Elevación
350 mA
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
This differs from C. equestris and C. mexicana by the narrower, orangish to reddish tan stipe bases and rhizome scales, similar to those found in C. interjecta and C. excelsa, and also by the glandular blade surfaces abaxially. Ctenitis interjecta differs by the more nearly equilateral proximal pinnae, while C. excelsa differs by the eciliate segment margins. Both collections of C. sloanei cited by Palacios-Rios, 1992, from Veracruz as this species are C. excelsa.A