Geology and Natural History. 65 
Nevada in California, therefore appropriately dedicated to Prof. 
Wm. H. Brewer of Yale College, from whom we are expecting 
the Flora of California; and Ghiesbreghtia, a striking new Scroph- 
ulariaceous genus from Southern Mexico. s to new species, 
all one are from the Rocky Mountains, or farther west. The 
eastern one, of particular interest, is Pachystigma Canbyi, a second 
species of this formerly monotypic genus, discovered by Mr. Canby 
in the Virginian Alleghanies. Here is a western genus now aug- 
mented by an eastern species, evidently very local, and overlooked 
until Mr. Canby set eyes upon it. “ the balance,” a 
new Californian Direa is here published, D. occidentalis, which 
from him that Y. gloriosa has fruited in the Congressional Gar- 
where it has been examined and photo- 
Ridge, Virg ss, this autumn, found in flower 
a tall reed, from fifteen to eighteen feet high, which proves to be 
on nax, or at least is not to be distinguished from 1t as to 
Mediterranean region, and is not a plant which would be expec 
to endure, still less to be indigenous in our Alleghanian region. 
I have no idea that the imported plant would survive there. The 
fact of its survival, and the circumstances under which it oceurs, 
render it probable that it is no new comer. gl A. G. 
- Trichomanes radicans in Kentucky.—This discovery, which 
unexpectedly adds this fern to the botany of the northern United 
States and extends its range up to about lat. 38°, _be men- 
tioned more particularly in a later number of the Journal, a. 6. 
Ax. Jour. Sct.—Tump Serres, Vou. VII, No. 37.—JAn., 1874. 
5 
