Polypodium triseriale Sw.

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Polypodiaceae

  • Scientific Name

    Polypodium triseriale Sw.

  • Description

    Species Description - 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).

  • Discussion

    Type. s. coll. s.n. (S).

    Goniophlebium haenkei C. Presl, Tent. Pterid. 186, pl. 7. 1836. Polypodium haenkei (C. Presl) Liebm., Mexic. Bregn. 204 (reprint 52). 1842. Type. Mexico. Haenke s.n. (PRC).

    Unverified, Doubtful, or Mistaken Reports. Mich (Arse`ne 6690, MEXU, cited by Di´az-Barriga & Palacios-Rios, 1992, but not verified). QR (Cabrera & de Cabrera 4205, CIQR, MEXU, cited by Palacios-Rios, 2002c, but not verified). Polypodium triseriale is distinct by its venation and sori in 2–3 rows on each side of the midvein.

  • Distribution

    Epiphytic, widespread in wet forests; 100–1500 m. Mexico; Guat, Bel, Hond, Salv, Nic, CR, Pan; Jam, PR, L Ant; Col, Ven, Trin, Guy, Sur, Fr Gui, Ec, Peru, Braz, Bol, Parag.

    Mexico North America| Paraguay South America| Bolivia South America| Brazil South America| Peru South America| Amazonas Ecuador South America| French Guiana South America| Suriname South America| Guyana South America| Trinidad and Tobago South America| Venezuela South America| Amazonas Colombia South America| West Indies| Puerto Rico South America| Jamaica South America| Panama Central America| Costa Rica South America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Belize Central America| Guatemala Central America|