Monographs Details:
Authority:
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Family:
Pteridaceae
Pteridaceae
Description:
Species Description - Rhizomes erect; rhizome scales 3–5 x 0.5–0.8 mm, concolorous, dark golden brown, margins with acute, tooth-like undulations, not prolonged into hair-like uniseriate tips; fronds to 120 x 20 cm, clumped; stipes 1/3–1/2 the frond length, dark reddish brown to black, glabrous except for sparse golden brown scales at bases; blades lanceolate, bipinnate-pinnatifid to tripinnate, pinnae equilateral; ultimate segments ascending, lanceolate, texture thin, wrinkled, glabrous adaxially, white-farinose abaxially, margins toothed, slightly recurved; veins free, prominent; sori elongate along the veins, appearing as black specks scattered in the white farina; spores reddish brown; 2n =240 (Jam, Old World).
Species Description - Rhizomes erect; rhizome scales 3–5 x 0.5–0.8 mm, concolorous, dark golden brown, margins with acute, tooth-like undulations, not prolonged into hair-like uniseriate tips; fronds to 120 x 20 cm, clumped; stipes 1/3–1/2 the frond length, dark reddish brown to black, glabrous except for sparse golden brown scales at bases; blades lanceolate, bipinnate-pinnatifid to tripinnate, pinnae equilateral; ultimate segments ascending, lanceolate, texture thin, wrinkled, glabrous adaxially, white-farinose abaxially, margins toothed, slightly recurved; veins free, prominent; sori elongate along the veins, appearing as black specks scattered in the white farina; spores reddish brown; 2n =240 (Jam, Old World).
Discussion:
Acrostichum calomelanos L., Sp. Pl. 2: 1072. 1753. Type. LINN sheet 1245.19, photos A, GH. Ceropteris serrata Fe´e, Me´m. Foug. 8: 81. 1857. Type. Mexico. [Veracruz:] Orizaba, Schaffner 162 (P, not found). For additional synonymy, see R. M. Tryon (1962).
Pityrogramma calomelanos is distinguished from P. ebenea by its finer blade dissection, ascending segments, and occurrence at lower elevations.
Distribution:
Paraguay South America| Bolivia South America| Brazil South America| Peru South America| Galápagos Islands Ecuador South America| Ecuador South America| French Guiana South America| Trinidad and Tobago South America| Venezuela South America| West Indies| Bahamas South America| Panama Central America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Belize Central America| Guatemala Central America| México Mexico North America|
Paraguay South America| Bolivia South America| Brazil South America| Peru South America| Galápagos Islands Ecuador South America| Ecuador South America| French Guiana South America| Trinidad and Tobago South America| Venezuela South America| West Indies| Bahamas South America| Panama Central America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Belize Central America| Guatemala Central America| México Mexico North America|