198 Postelsia 
or on leading shoots the twigs terete, leaves 
similar and with slightly spreading tips. Car- 
pels opposite, decussate, one-to  five-ovuled. 
Fruit ripening the first season. 
This section differs from Eu-Cupressus in its 
Thuja-like foliage, its few-ovuled carpels, and 
in the fact that its fruit ripens the first season. 
It has frequently been recognized as a distinct 
genus, but the differences are not as marked as 
those which exist between the subgenera of 
Juniperus, and do not appear sufficient to give 
generic rank to this group. 
Five species of North America and Japan. 
Cupressus nootkatensis Lambert, Pinus. 2:18. 
TO2As 
[Chamecy paris nootkatensis (Lambert) Spach. 
Hist. Veg. 11:°333. 1842. Vellow i@ypress: 
Yellow Cedar. 
A tree with horizontal branches, stout, dis- 
tichous, terete or slightly flattened twigs, and 
deciduous spray; leaves four-ranked, scale-like 
acute or acuminate, 2-10 millimeters long, usual- 
ly eglandular, dimorphic on the smaller twigs; 
cones spherical, 7-12 millimeters in diameter, 
