424 Contfera—Pinus. 
inches long, with sharp recurved prickles. North-western 
America. P. ponderésa is said to be identical with this. What 
we have seen under this name is very near the last, but the 
branches are slenderer and the leaves shorter, of adarker green. 
ll. P. macrocdrpa, syn. P. Coulterit.—A large tree with 
beautiful glaucous foliage and immensely large cones. Leaves 
9 to 12 inches long, rigid, sheaths long. This is a very distiuct 
and desirable species. A native of California. 
12. P. Fremontianu, syn. P. monophyllu—A small slow- 
erowing tree with glaucous-green rigid curved leaves from 2 
to 3 inches long. Cones from 2 to 3 inches long, without 
prickles. California. 
13. P. radiata.—A large tree with slender branches and 
smooth greyish-green bark. Leaves dark green, 3 to 4 inches 
long, slender and twisted. Cone about 6 inches long, with 
thick woody seales. Also a native of California. 
P. australis, P. Sabinicna, P. Jétfreyi, P. rigida, and 
LP. Teda are North American species of this section, the first 
two rather tender. P. Bungedna is a very distinct species 
of recent introduction, from China. 
§ 3. Leaves usually five in each sheath. 
. 14. P. exvcélsa. Bhotan Pine.—This is perhaps the m st 
familiar of this group. It isa handsome slender tree from G0 
to 150 feet high, with smooth pale bark and drooping branches. 
Leaves glaucous-green, very slender and flexible, from 4 tu 6 
inches long. Cone cylindrical, pendulous, 6 to 8 inches long, 
with broad fut smooth scales. This is the most desirable 
species of this section as an ornamental tree, being a rapid 
erower and freely producing its large conspicuous cones. A 
native of the mountains of Northern India. 
15. P. Strobus. Weymouth Pine, White Pine of the 
Americans.—This is very near the last, differing mainly in the 
shorter less abundant foliage and shorter cones with thinner 
seales. Although a very beautiful tree, this must cede the 
palm to the preceding, as it is of rather loose habit. A native 
of North-eastern Amcrica, where it attains a height of 100 to 
150 feet. The varieties nadna and dba are interesting ; the 
latter has dense short silvery foliage. 
16. P. Cémbru. Siberian Stone Pine.—This species is 
remarkable for its slow growth, close erect symmetrical habit, 
