Monographs Details:
Authority:
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Family:
Hymenophyllaceae
Hymenophyllaceae
Description:
Species Description - Rhizome stout 1.0-2.0 mm diam., long-creeping; rhizome hairs dense slender, brown, 1 mm long, and occasional thick dark brown hairs, 1.0-1.5 mm long at frond base and on stipe; roots lacking; fronds 22-30 cm long, 6-10 cm wide, distant; stipe ca. ¼ the frond length, stout, flattened, 0.8-1.0 mm wide, alate ¾ way to base, with scattered 0.1 mm long stubby glandular hairs; blade bipinnate to tripinnate-pinnatifid, ovate to lanceolate, barely reduced at base; rachis alate, glabrous except for stubby blackish hairs; pinnae 12-18 pairs, lanceolate, ultimate segments 0.5-0.8 mm wide, margin entire; veins free, false veins lacking; sori terminating segments, free from or barely adnate to blade tissue; involucre elongate, 1.8-2.0 mm long, 0.5-0.8 mm wide at middle, 0.3 mm wide at base, mouth only slightly or not flaring, concolorous.
Species Description - Rhizome stout 1.0-2.0 mm diam., long-creeping; rhizome hairs dense slender, brown, 1 mm long, and occasional thick dark brown hairs, 1.0-1.5 mm long at frond base and on stipe; roots lacking; fronds 22-30 cm long, 6-10 cm wide, distant; stipe ca. ¼ the frond length, stout, flattened, 0.8-1.0 mm wide, alate ¾ way to base, with scattered 0.1 mm long stubby glandular hairs; blade bipinnate to tripinnate-pinnatifid, ovate to lanceolate, barely reduced at base; rachis alate, glabrous except for stubby blackish hairs; pinnae 12-18 pairs, lanceolate, ultimate segments 0.5-0.8 mm wide, margin entire; veins free, false veins lacking; sori terminating segments, free from or barely adnate to blade tissue; involucre elongate, 1.8-2.0 mm long, 0.5-0.8 mm wide at middle, 0.3 mm wide at base, mouth only slightly or not flaring, concolorous.
Discussion:
Trichomanes scandens Hedwig, Fil. gen. sp., t. 6. 1799, nom. illeg., non Linnaeus, 1753. Vandenboschia radicans (Swartz) Copeland, Philipp. J. Sci. 67: 51, 54. 1938. Type. Hedwig, Fil. gen. sp., t. 6. 1799. Trichomanes kunzeanum Hooker, Sp. fil. 1:127, t. 39d. 1844. Syntypes. Peru. Pangoa, Matthews 1088 (K!), “Papayaco,” Poeppig s.n. (K!); Venezuela. “Caracas,” Linden 176 (K?; isosyntype BM). Trichomanes mexicanum van den Bosch, Ned. Kruidk. Arch. 5: 164. 1861. Syntypes. Mexico. Schiede 806 (B), Schaffner 7 (Herb. Fée, P?). Trichomanes radicans closely resembles T. collariatum in its relatively large fronds and long-creeping rhizome, but is distinct by its involucre with narrow, non-flared lips, long stipe and broad blade.
Trichomanes scandens Hedwig, Fil. gen. sp., t. 6. 1799, nom. illeg., non Linnaeus, 1753. Vandenboschia radicans (Swartz) Copeland, Philipp. J. Sci. 67: 51, 54. 1938. Type. Hedwig, Fil. gen. sp., t. 6. 1799. Trichomanes kunzeanum Hooker, Sp. fil. 1:127, t. 39d. 1844. Syntypes. Peru. Pangoa, Matthews 1088 (K!), “Papayaco,” Poeppig s.n. (K!); Venezuela. “Caracas,” Linden 176 (K?; isosyntype BM). Trichomanes mexicanum van den Bosch, Ned. Kruidk. Arch. 5: 164. 1861. Syntypes. Mexico. Schiede 806 (B), Schaffner 7 (Herb. Fée, P?). Trichomanes radicans closely resembles T. collariatum in its relatively large fronds and long-creeping rhizome, but is distinct by its involucre with narrow, non-flared lips, long stipe and broad blade.
Distribution:
Mexico North America| Paraguay South America| Brazil South America| Venezuela South America| Colombia South America| Panama Central America| Guatemala Central America|
Mexico North America| Paraguay South America| Brazil South America| Venezuela South America| Colombia South America| Panama Central America| Guatemala Central America|