698 FILICES. 
(Bourgeau, 3073).—West Inpizs to Peru and Sour BraziL; also widely dispersed in 
Arnica, the warmer parts of Asta, and in Po.ynusia. Hb. Kew. 
O. vulgatum has an exceedingly wide range, including Texas and Arizona, but we 
have seen no Mexican specimens, and no record of any. Klotzsch, however (Linnea, 
xviii, p. 529) records O. bulbosum, Mich.=0. crotalophoroides, Walker (Eaton, Ferns 
N. Am. ii. p. 265, t. 81. figg. 5-7) from Real del Monte, Ehrenberg. 
48. BOTRYCHIUM. 
Botrychium, Swartz; Hook. et Bak. Syn. Fil. p. 447, t. 9. fig. 75. 
Six species are admitted in the ‘Synopsis Filicum,’ and they are generally spread in 
temperate and arctic regions; rare in the tropics, and, what is very remarkable, the 
genus is apparently nowhere represented in Africa. 
1. Botrychium ternatum, Swartz; Hook. et Bak. Syn. Fil. p. 448; Eaton, — 
Ferns N. Am. i. p. 147, t. 20 et 20a, et in Proc. Am. Acad. xviii. p. 189. 
Botrychium obliquum, Muhlenb.; Ch. et Schl. in Linnea, v. p. 621; Liebm. Mexicos Bregner, 
p- 153; Fourn. Mex. Pl. Enum. i. p. 141. 
Botrychium decompositum, Mart. et Gal. Foug. Mex. p. 15, t. 1. 
NEWFOUNDLAND to UNALASKA and southward to CaLirornia and Frormpa.—Norta 
Mexico, in the San Miguelito mountains (Schaffner, 944); SourH Mexico, between 
Totutla and Mirador (Liebmann), region of Orizaba (Bourgeau, 3154), Chiapas &c. 
(Ghiesbreght)—CoLomBia and VENEZUELA; and widely dispersed in the OLD Woz, 
ranging from Centra Evrore and Norruern Asia to AusTraLiA and NEW ZEALAND. 
Hb. Kew. 
2. Botrychium virginianum, Swartz; Hook. et Bak. Syn. Fil. p. 448; Fourn. 
Mex. Pl. Enum. i. p. 140; Eaton, Ferns N. Am. i. p. 258, t. 33, et in Proc. Am. Acad. 
xviii. p. 189; Hook. et Grev. in Hook. Bot. Mise. iii. 1833, p. 223 (var. mexicanum) ; 
Liebm. Mexicos Bregner, p. 153. 
Botrychium brachystachys, Kunze in Linnea, xviii. p. 805. 
New Brunswick, CanaDa, and OrREGoN southward to Fioripa.—Norts# Mexico, San 
Miguelito mountains (Schaffner, 943); SourH Mexico, San Nicolas (Schmitz), Real del 
Monte (Coulter, 1716), Desierto Viejo (Bourgeau, 915), Chiapas &c. (Ghiesbreght, 430) ; 
GuaTEMaLa, Chilasco and Volcan de Agua (Godman & Salvin).—Cotomsi1a to Ecuapor 
and Brazit; and Eastern Europe to JAPAN, as well as in the NEILGHERRIES and CEYLON. 
Hb. Kew. 
Order CLXII. EQUISETACEZE. 
Equisetacee, Milde in Nov. Act. Acad. Nat. Cur. xxiv. pars 2, cum tab. 35, et Fil. Europ. &c. 
pp. 20-9250. 
Restricted to the genus Hquisetum, which comprises about twenty-five species, gene- 
rally dispersed in the northern hemisphere, from the arctic regions southward ; much 
