Pityrogramma calomelanos (L.) Link
-
Authority
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
-
Family
Pteridaceae
-
Scientific Name
-
Description
Species Description - Rhizome erect; rhizome scales 3-5 mm long, 0.5-0.8 mm wide, concolorous, dark golden brown, margin with acute, toothlike undulations, not prolonged into hairlike uniseriate tip; fronds to 120 cm long, 20 cm wide, clumped; stipe 1/3-1/2 the frond length, dark reddish-brown to black, glabrous except for sparse scales at base; blade lanceolate, bipinnate-pinnatifid to tripinnate; segments lanceolate, texture thin, wrinkled, glabrous above, white farinose below, margin toothed, slightly recurved; veins free, prominent; sori elongate along the veins, appearing as black specks scattered among the white farina; spores reddish-brown.
-
Discussion
Acrostichum calomelanos Linnaeus, Sp. pl. 2: 1072. 1753. Type. “LINN sheet 1245.19, photos A, GH are this sp.” (R. Tryon, 1962). Ceropteris serrata Fée, Mém. foug. 8: 81. 1857. Type. Mexico. [Veracruz:] Orizaba, Schaffner 162 (P?). For additional synonyms, see R. Tryon (1962). Pityrogramma calomelanos is distinguished from P. tartarea by its finer blade dissection, ascending segments and occurrence at lower elevations. Oaxacan material is referable by Tryon (1962) to var. calomelanos.
-
Distribution
Terrestrial, in open areas, road-banks, rarely in forests; Choapan, Ixtlán, Jamiltepec, Juchitán, Juquila, Mixe, Pochutla, Putla, Tuxtepec, Villa Alta; 50-1150 m. Mexico (Sin, Nay, Jal, Col, Mich, Gro, Mex, SLP, Hgo, Ver, Oax, Chis, Tab); US (Fla); Guat to Pan; WI, Trin; Col to Fr Gui, to Bol & Arg, Gal; introduced in the Old World.
Mexico North America| Argentina South America| Bolivia South America| French Guiana South America| Colombia South America| Trinidad and Tobago South America| West Indies| Panama Central America| Guatemala Central America| Florida United States of America North America|