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:
Cyatheaceae
Cyatheaceae
Description:
Species Description - Trunks to 7 m tall, 6 cm diam.; stipes stramineous to brown, armed with slender to stout spines, scales brown to dark brown, concolorous or with narrow, pale, entire to slightly erose margins, scurfy with tiny squamules; blades 2–3 m long, bipinnatepinnatifid; rachises stramineous to brown, with occasional low spines, glabrous to scurfy; laminae firm; pinnae sessile or with stalks to 1 cm; pinnules sessile or stalked to 1 mm, 1.5–2 cm wide, crenulate to broadly dentate, segments 3–4 mm wide, rounded at tips, apices obtuse; sterile veins simple or 1-forked; costae hairy adaxially, segment midveins with 1–2 hairs near tip; costae abaxially with short hairs (variable amount) and dark brown bullate scales; sori medial on simple veins or with forks, indusia absent, paraphyses shorter than sporangia.
Species Description - Trunks to 7 m tall, 6 cm diam.; stipes stramineous to brown, armed with slender to stout spines, scales brown to dark brown, concolorous or with narrow, pale, entire to slightly erose margins, scurfy with tiny squamules; blades 2–3 m long, bipinnatepinnatifid; rachises stramineous to brown, with occasional low spines, glabrous to scurfy; laminae firm; pinnae sessile or with stalks to 1 cm; pinnules sessile or stalked to 1 mm, 1.5–2 cm wide, crenulate to broadly dentate, segments 3–4 mm wide, rounded at tips, apices obtuse; sterile veins simple or 1-forked; costae hairy adaxially, segment midveins with 1–2 hairs near tip; costae abaxially with short hairs (variable amount) and dark brown bullate scales; sori medial on simple veins or with forks, indusia absent, paraphyses shorter than sporangia.
Discussion:
Alsophila schiedeana C. Presl, Suppl. Tent. Pterid. 62. 1836 [based on a description of a Polypodium without binomial in Schldtl. & Cham., Linnaea 5: 609. 1830]. Trichipteris schiedeana (C. Presl) R. M. Tryon, Contr. Gray Herb. 200: 46. 1970. Type. Mexico. [Veracruz:] “Inter Huitamalco et Cuapa regionis calidae,” Schiede & Deppe 757 (B!-2 sheets, frags. GH!, US!; isotype LE!). See Barrrington (1978: 38) for additional synonyms based on non-Mexican types.
Unverified, Doubtful, or Mistaken Reports. Tab (Linden s.n., K, cited by Cowen, 1983, but not verified). Among the exindusiate species of Mexican tree ferns, C. schiedeana differs by its concolorous dark brown stipe scales, dark brown bullate costal scales, and rounded segment apices.
Distribution:
Mexico North America| Colombia South America| Panama Central America| Costa Rica South America| Nicaragua Central America| Honduras Central America| Guatemala Central America| Belize Central America|
Mexico North America| Colombia South America| Panama Central America| Costa Rica South America| Nicaragua Central America| Honduras Central America| Guatemala Central America| Belize Central America|