Serpocaulon triseriale (Sw.) A.R.Sm.
Descripción
Rhizomes short-creeping, 7–10 mm diam.; rhizome scales clathrate with narrow, pale margins, central portion light brown with thickened dark brown walls, ovate-acuminate, 4–5 X 2–3 mm; fronds 36–90 cm long, 1–2 cm distant; stipes 1⁄4–2⁄5 the frond length, stramineous to castaneous, glabrous; blades 1-pinnate, broadly oblong, 16–50 cm wide, terminal pinnae conform; pinnae 3–14 pairs, 1.2–3.2 cm wide, proximal ones with cuneate bases, distal ones broadly adnate, linear-oblong, acuminate, glabrous except for rare to scattered brown trichomidia 0.1–0.3 mm long, margins entire; veins netted, with 3–4 rows of areoles between costae and pinna margins; sori round, in 2–3 rows between costae and pinna margins; sporangia glabrous; 2n=74 (Oax), 148(Jam).A
Forma de vida
EpífitaA
Ejemplar revisado
(Related to the synonym Polypodium triseriale) Camp (Ucan & Andrews 5245, UADY). Chis (Martínez S. 11706, NY; Purpus 6757, NY). Gro (Lorea 4797, IEB). Oax (Hallberg 1624, NY; Mickel 5940, NY). Pue (Sánchez M. 644, US). Tab (Cowan 3108, NY; Zamudio R. 1007, IEB). Ver (Rzedowski 19080, NY).
Unverified, Doubtful, or Mistaken Reports. Mich (Arséne 6690, MEXU, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). QR (Cabrera & de Cabrera 4205, CIQR, MEXU, cited by Palacios-Rios, 2002c, but not verified).A
Unverified, Doubtful, or Mistaken Reports. Mich (Arséne 6690, MEXU, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified). QR (Cabrera & de Cabrera 4205, CIQR, MEXU, cited by Palacios-Rios, 2002c, but not verified).A
Elevación
100 – 1500 mA
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Tipo de vegetación (notas)
Widespread in wet forests.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
Amenazada (A)C
Discusión taxonómica
(In relation to the synonym) Polypodium triseriale is distinct by its venation and sori in 2–3 rows on each side of the midvein.A