Pleopeltis furfuracea (Schltdl. & Cham.) A.R.Sm. & Tejero
Descripción
Rhizomes creeping, 1.5–2 mm diam.; rhizome scales concolorous tan, ovate to lanceolate, entire to minutely denticulate, 3–5 X 1 mm; fronds 23–48 cm long, distant to subapproximate; stipes 1⁄6–1⁄4 the frond length, castaneous to atropurpureous, with some scales lanceolate and spreading as on rhizomes, others small, appressed, round, peltate, laciniate, as on blades; blades pinnatisect, narrow to linear-oblong, 2–7 cm wide; pinnae 27–40 pairs, 12–28 mm long, linear, costae and veins not visible, sterile pinnae 2–4 mm wide, fertile pinnae ca. 2 mm wide; abaxial surfaces with dense, round to ovate-lanceolate (occasionally linearlanceolate in w. Mexico), fimbriate scales cut 1⁄2 or nearly to center, white with dark center, to 1.5 X 0.5–1 mm; rachises with similar and also larger ovate scales with fimbriate margins; adaxial surfaces glabrescent, often with lime-dots; sori round, medial, sporangia glabrous.A
Forma de vida
EpífitaA
Ejemplar revisado
(Related to the synonym Polypodium furfuraceum) Chis (Breedlove 22158, NY). Col (Esperón 18291, GUADA). Dgo (Bashor 665, NY). Gro (Rzedowski 22652, NY). Hgo (Clark 7022, NY). Jal (Palafox 5407, NY). Méx (Rzedowski 20777, NY). Mich (Pringle 3357, NY). Mor (Rzedowski 19778, NY). Nay (Feddema 931, NY). Oax (Mickel 3701, NY). Qro (Fernández N. 3417, NY). Sin (Breedlove 18246, NY). SLP (Rzedowski 24557, NY). Ver (Purpus 2167, NY).A
Elevación
750 – 2300 mA
Tipo de vegetación
Bosque de neblina/mesófilo, Selva alta, Bosque de encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym) Polypodium furfuraceum most closely resembles P. cryptocarpon in its densely scaly blades and pale, concolorous rhizome scales but is distinguished by the segments perpendicular to the rachises (vs. somewhat falcate or ascending) and the deeply lacerate abaxial blade scales (vs. cut less than halfway to costa); entire margins (vs. often crenulate); broader pinnae (sterile 2–4 mm wide (vs. 1.5–2 mm).
The species is highly variable with blades ranging from very narrow to broad, with or without lime-dots, scaly to nearly glabrous adaxially, and with scales dark or light at point of attachment. Material from Peru and Bolivia has much wider blade scales, especially adaxially, and may represent a distinct taxon.
Material from Guerrero and western Oaxaca is distinct in having a high percentage of spreading, linear-lanceolate scales on the adaxial laminar surfaces (Fig. 241M), e.g., Gro (Calonico Soto 3881, FCME; Clark 7145, NY; Keil 9132, ASU; Mexia 9017, NY; Paxson et al. 17M790, TEX; Rzedowski 22541, 22652, NY). Oax (Diggs 3989, NY; Mickel 4208, 6121, 6982, NY).A
The species is highly variable with blades ranging from very narrow to broad, with or without lime-dots, scaly to nearly glabrous adaxially, and with scales dark or light at point of attachment. Material from Peru and Bolivia has much wider blade scales, especially adaxially, and may represent a distinct taxon.
Material from Guerrero and western Oaxaca is distinct in having a high percentage of spreading, linear-lanceolate scales on the adaxial laminar surfaces (Fig. 241M), e.g., Gro (Calonico Soto 3881, FCME; Clark 7145, NY; Keil 9132, ASU; Mexia 9017, NY; Paxson et al. 17M790, TEX; Rzedowski 22541, 22652, NY). Oax (Diggs 3989, NY; Mickel 4208, 6121, 6982, NY).A