FOREST TREES. 227 
and it is hoped it may prove entirely hardy. Gray 
places it among the Cypresses (Cupressus pisifera, 
var. obtusa). 
Sub Order, Taxineaw. 
SALISBURIA. 
Staminate flowers, axillary, filiform, pedunculate ; 
fertile flowers, terminal, solitary, on simple or branch- 
ing peduncles; ovule, in a cup-shaped disk, the disk 
becoming fleshy, embracing the base of the nut-like 
seed. 
Salisburia adiantifolia— Ginko. 
Leaves, pectinate, somewhat wedge-shaped at the 
base, irregularly cut on the margin, and marked with 
straight, divergent veins. 
The Ginko has its origin in Japan, and in its 
native country is said to grow to a very large size. It 
is cultivated in America as an ornamental tree, and 
is admired for the singularity of its foliage. It is 
nearly quite hardy in Northern Illinois, the leading 
shoot only being occasionally somewhat injured by 
severe winters, after a season of ill-matured growth, 
The quality of its wood does not appear to be well 
ascertained. It is commonly propagated by layers or 
cuttings, although plants grown from seed are said 
to become the finest trees. As yet there are few trees 
producing seed in America. The tree is dicecious. 
TAXUS—YEW. 
Flowers, mostly diccious, axillary; sterile catkins, 
small, globular, few flowered; anther cells, three to 
