223 
to be a distinct species, distinguished by the linear dicho- 
tomously divided segments. We have received specimens 
from Dr. Torrey, but without any particular station attached 
to them. B. gracile of Pursh, which Sprengel refers to this 
place, belongs to B. Virginicum. 
9. B. cicutarium. Sw. Syn. Fil. p. VT1.— Plum. Fil. t. 159. 
Has. St. Domingo, Plumier.—Chamisso and Schlechten- 
dal doubt if this plant ought not to be considered a pri 
of B. Virginicum. 
10. B. Virginicum. Sw. Syn. Fil. p. 171.—B. gracile, Ph. F7. 
Am, Sept. p. 656.—Osmunda Virginica, Linn. Sp. Pl. 
. p. 1519. 
8. Mexicanum ; fronde coriaceo-membranacea opaca, pinnulis * 
latioribus minus profunde pinnatifidis.—B. Virginicum, 
Schlecht. in Linnea, v. 5. p. 621. 
Haz. Canada to Carolina. Rocky mountains, Drummond. 
Columbia, Garry. g. woods at Jalapa, Mexico, Chamisso. 
Rigla (Mexico), Captain Vetch.—This is the largest of the 
American species, and a very elegant plant. The B. gracile of 
Pursh does not differ, except in the smaller size, and corre- 
sponding delicacy of the frond. It has been communicated 
to us by Dr. T orrey, who likewise considers it as a wary of 
the present species. 
ll. B. australe, Br. Prod. Fl. Nov. Holl, p. 164. Sieb.. Fl, 
Mizta, No. 266. 
Has. New Holland, Brown. Sieber.—This comes very 
near to the preceding, in the size, habit, and other charac- 
ters, i 
12. B. aiiin 
Scapo stipitem elongatam inferne incrassatam lanuginosam 
terminante fronde breviore, fronde tripinnata ampla, pinnulis 
ovato-lanceolatis membranaceis profunde pinnatifidis segmen- 
tis ovato-oblongis vr Mit pud Ne. iion et 
Grev, Ic. Fi. 19... 
Has. Nepal, Dr. Wallich.— Of bbuliseieli cn. a liapite 
from very small specimens in the cones Filicum. More per- 
GERD. 
