Pleopeltis bradeorum (Rosenst.) A.R.Sm. & Tejero
Descripción
Rhizomes creeping, 2–3 mm diam.; rhizome scales lustrous, slightly bicolorous, orange-clathrate center with thick-walled cells, margins paler, thin-walled, lanceolate to linear-lanceolate, erose, ca. 3 X 0.8–1 mm; fronds 26–40 cm long, 3–10 mm distant; stipes of sterile fronds 1⁄3–1⁄2 the frond length, those of fertile fronds 1⁄2–2⁄3 the frond length, stramineous, with scattered to abundant scales 1–4 mm long (as on rhizomes); sterile blades simple to pinnatisect, simple ones 2–3.2 cm wide; pinnae 0–5 pairs, sterile ones oblong, narrowed at bases, sterile pinnae 1.5–2.6 cm wide, apices acuminate to attenuate; fertile fronds taller and with narrower pinnae, fertile pinnae 1–1.5 cm wide; abaxial surfaces with scales similar to those on stipes and rhizomes, lustrous, orange, denticulate to fringed, 0.5–2 mm long; adaxial surfaces glabrous; venation netted; sori oblong to linear, 2–10 mm long, often interrupted and the sori then round; sporangia glabrous.A
Forma de vida
EpífitaA
Ejemplar revisado
(Related to the synonym Polypodium bradeorum) Chis (Breedlove 22284, DS, F, MEXU, NY, 22496, 23552, DS). Oax (Mickel 7299, NY; Torres C. 5768, MEXU). Ver (Finck 45, US, NY, 199, UC; Palacios-Rios 2900, IEB; Ventura A. 9531, ENCB, IEB).A
Elevación
700 – 1350 mA
Ecología y Hábitat
On shaded limestone rocks.A
Tipo de vegetación
Bosque de neblina/mesófilo, Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(Related to the synonym Polypodium bradeorum) Evans and Mickel (1969) placed P. colysoides in synonymy under P. bradeorum, though Mickel and Beitel (1988) recanted. Moran (in Davidse et al., 1995) followed the Oaxaca treatment in treating the two as distinct species and even placed them in different genera (bradeorum in Pseudocolysis), believing that P. colysoides had only oblong sori rather than linear interrupted sori. Sori are variable in the species, however, and the type of P. colysoides has interrupted linear sori. Scales of the rhizomes, stipes, and blades are identical in the two. Generally, specimens with 0–3 pinna pairs have linear, usually interrupted sori, whereas those with 3–5 pinna pairs have oblong sori.
Moran (in Davidse et al., 1995) suggested that Polypodium guatemalense Klotzsch (Allg. Gartenzeitung 23: 33. 1855) is a posible synonym of Pseudocolysis bradeorum (Polypodium bradeorum) . The tripartite frond form is similar, but the type (Guatemala, Warszewicz s.n., B, digital image at NY!) has very large round sori in rows between pronounced primary veins, as in Niphidium, so the name does not seem to apply to P. bradeorum.A
Moran (in Davidse et al., 1995) suggested that Polypodium guatemalense Klotzsch (Allg. Gartenzeitung 23: 33. 1855) is a posible synonym of Pseudocolysis bradeorum (Polypodium bradeorum) . The tripartite frond form is similar, but the type (Guatemala, Warszewicz s.n., B, digital image at NY!) has very large round sori in rows between pronounced primary veins, as in Niphidium, so the name does not seem to apply to P. bradeorum.A