@. 93] CLASSIFICATION AND DESCRIPTION AWés) 
to nearly 4 in. long, sometimes in clus- 
ters: seales with a short, recurved 
prickle. A medium-sized tree, 40 to 
70 ft. high, with hard, coarse-grained, 
very resinous wood; found east of 
the Allegha- 
nies through- 
out; more 
abundant in 
swamps. 
P. rigide. 
11. Pinus Austriaca, Hiss. (Aus- 
TRIAN OR BLACK PINE.) Leaves long, 3 
to 5in.,rigid, slender, incurved, sharply 
mucronate, of a dark green color; from 
short sheaths; 2 together. Cones 214 
to 3 in. long, regularly conical, slightly 
P. Austriaca. recurved, of a light brown color; scales 
smooth, shining, with a dull spine in 
the center. A large cultivated tree, 
60 to 80 ft. high, hardy throughout. 
Europe. 
12. Pinus Laricio, Poir. (CoRsI- 
CAN PINE.) Leaves 4 to 6 in. long, 
slender, very wavy, dark green; 2 
together in a sheath. Cones 2 to 3 
in. long, conical, somewhat curved, 
often in pairs. Scales 
with very small 
prickles. Seedsrath- 
er large with broad 
wings. A tall, open, 
pyramidal, rapid-growing tree, 60 to 100 
ft. high, with the branches in regular 
whorls, spreading and very resinous. 
Often cultivated. Europe. 
13. Pinus Massoniana, Sieb. (Mas- 
son’s PINE.) Leaves in twos, 4 to 6 in. 
long, rather stiff, concave on one side 
and convex on the other, twisted but 
P, Massoniana, not curved, sharp-pointed, of a fresh, 
