FILICES. 607 
Hook. et Bak. Syn. Fil. p. 113; J. Sm. in Seem. Bot. Voy. ‘ Herald,’ p. 239; Fourn. in 
Bull. Soc. Bot. France, xix. p. 259. 
Amphiblestra simplex, Fourn. in Bot. Zeit. 1873, p. 8, teste Hook. et Bak. 
GuatTemaLa, Choctum (Godman & Salvin) ; Nicaracua, Chontales (Tate, 119; Lévy, 
452); Panama, without locality (Cuming, 1124), Coiba (Seemann, 363).— VENEZUELA ; 
CotomBia. Hb. Kew. 
Tribe VI, PTERIDEZA. 
Thirteen genera are referred to this Tribe, which is spread over nearly the whole 
area of the Order. 
14. ADIANTUM. 
Adiantum, Linn.; Hook. et Bak. Syn. Fil. p. 1138, et ed. 2, p. 472, t. 2. fig. 21. 
Eighty species, a very large proportion of which are endemic in Tropical America, 
yet the genus is generally spread, except in the frigid zones. 
1. Adiantum braunii, Mett. in Linnea, xxxvi. p. 75. 
Mexico (Karwinski; Berlandier ; Leiboldt). 
2. Adiantum capillus-veneris, Linn.; Hook. Sp. Fil. ii. p. 36; Hook. et 
Bak. Syn. Fil. p. 123; Liebm. Mexicos Bregner, p. 115; Fourn. Mex. Pl. Enum. i. 
p. 127; Eaton, Ferns N. Am. i. p. 281, t. 37, et in Proc. Am. Acad. xviii. p. 187. 
Adiantum tenerum, var. dissectum, Mart. et Gal. Foug. Mex. p. 71. 
Adiantum trapeziforme, Schkuhr, Crypt. t. 121, non Linn. 
Very widely diffused in TEMPERATE REGIONS throughout the world, including the 
- mountains of Mrxico, where it occurs up to an altitude of 10,000 feet on the peak of 
Orizaba. Hb. Kew. 
8. Adiantum exthiopicum, Linn.; Hook. Sp. Fil. ii. p. 37, t. 77; Hook. et 
Bak. Syn. Fil. p. 123. 
Adiantum thalictroides, Willd.; Fée, 9° Mém. Foug.; Mett. in Tr. et Planch. Fl. Nov. Gran., Crypt. 
p. 298; Fourn. Mex. Pl. Enum. i. p. 127; Eaton in Proc. Am. Acad. xviii. p. 186. 
Adiantum crenatum, Poiret, var. glabrescens, Mett. teste Kuhn, Beitr. p. 7. 
Adiantum pellucidum, Mart. et Gal. Foug. Mex. p. 72. 
Adiantum gratum, Fée, 9° Mém. Foug. 
Adiantum tenerum, Liebm. Mexicos Bregner, p. 115 partim, ex Fourn. loc. cit. 
Adiantum lobatum, Presl, Relig. Henk. i. p. 62, t. 10. fig. 5 ? 
Very widely spread in TEMPERATE REGIONS, including Mexico. Hb. Kew. 
4, Adiantum concinnum, H. B. K. Nov. Gen. et Sp. i. p. 17, et vii. t. 668; 
Presl, Relig. Henk. i. p. 63; Liebm. Mexicos Bregner, p. 115; Hook. et Bak. Syn. 
Fil. p. 123; Fourn. Mex. Pl. Enum. i. p. 126; Bak. in Journ. Bot. 1884, p. 362. 
Adiantum affine, Mart. et Gal. Foug. Mex. p. 70, non Willd. 
Adiantum lutescens, Moug. in Fée, Gen. Fil. p. 119. 
NortH Mexico, Sierra Madre (Seemann), San Luis Potosi (Virlet d’ Aoust); Sours 
