Descripcion

Epiphytic or lithophytic ferns. Rhizomes longcreeping, filiform, branched, c. 0.3 mm in diameter, densely covered with long, slender, simple, dull brown hairs, rootless or with root-like shoots covered by the same hairs as on rhizomes. Fronds up to 2–4 cm apart. Stipes 0.5–3.0 cm long, fully winged or winged at the upper part, with base thickened, blackish, bearing hairs similar to those on the rhizomes, other parts flattened or shallowly grooved ventrally, with short, pale brown clavate hairs on entire surface. Laminae 3.0–10.0(–15.0) × 1.0–4.0 cm, green or olive-green, diaphanous, glabrous, narrowly oblong-elliptic to narrowly ovate-elliptic, or ovate, or slightly lanceolate with well attenuated to sharp apex, bipinnatifid to tripinnatifid, and with anadromous venation. Rachis widely winged with mostly significantly undulate margins. Pinnae alternate, pinnatifid to bipinnatifid, ovate or lanceolate to oblong, with margin base mostly undulate. Segments entire, linear, apically emarginate, often with undulating margins, and sometimes but not always with longitudinal folds parallel to true veins (especially when dry), false veins absent. Costae and veins prominent on both sides, with clavate hairs similar to those on the stipe. Lamina cells thin-walled, slightly elongate, mostly hexagonal. Sori paratactic, adaxially borne on the proximal pinnae and/ or pinnules, (4–)6 to more than 15 (in largest specimens) per fertile frond; indusia obconical to campanulate, 1.0– 1.5 × 0.8–1.2 mm, slightly bordered on both sides by laminar cells, forming a wing, and with few clavate hairs; mouth of indusia slightly dilated; receptacles cylindrical and filiform, short to long-exerted up to twice or more the sorus length (Ponce et al. 2017: 13)

Distribucion y Habitat

Restricted to southeastern South America, Argentina (Misiones) and Brazil (Rio Grande do Sul, Santa Catarina, Paraná, Rio de Janeiro, São Paulo, southern Minas Gerais), especially in Serra do Mar of southeastern Brazil (Figure 5). Epiphytic, sometimes epipetric on shady rocks, in wet forests in lowland to middle-elevations (sea level for the Brazilian southernmost populations up to 1600 m in Rio de Janeiro state).

Sinónimos

Crepidomanes Crepidomanes pyxidiferum (L.) Dubuisson & Ebihara var. australe

Ejemplares de referencia

Colector N° Colect. Especie Departamento Provincia Imagen
  • Burkart, A.
  • 1616 Oberá Misiones
  • Burkart, A.
  • 14656 Eldorado Misiones
  • Capurro, R. H.
  • 958 San Pedro Misiones
  • Dusén, P. K. H.
  • 665 a Paraná
  • Dusén, P. K. H.
  • 14045 Ypiranga Paraná
  • Hatschbach, G.
  • 15872 Guaira Paraná
  • Jürgens, C.
  • -1 8 Lageado Rio Grande do Sul
  • Keller, H. A.
  • 1659 Guaraní Misiones
  • Labiak, P. H.
  • 217 Santa Catarina
  • Labiak, P. H.
  • 3864 Céu Azul Paraná
  • Múlgura, M. E.
  • 2685 General Manuel Belgrano Misiones
  • Rosenstock, E.
  • 253 Lageado Rio Grande do Sul
  • Rosenstock, E.
  • 254 Rio Grande do Sul
  • Rosenstock, E.
  • 385 Lages Santa Catarina
  • Vanni, R. O.
  • 3006 Iguazú Misiones
  • Zanotti, C. A.
  • 561 San Pedro Misiones
  • Zanotti, C. A.
  • 568 San Pedro Misiones
  • Zanotti, C. A.
  • 568 San Pedro Misiones

    Nombre Vulgar y Usos

    Tipo y Observaciones

    Material Tipo: Argentina, Misiones. San Pedro. Puente López, sobre el Arroyo Yabotí Guazú, 27°04'10" S, 53°53'38" W, 410 m s.m., 27 Nov 2013, C. Zanotti et al. 568 (holotipo, SI; isotipo, P).
    Observaciones: