174 TREES OF THE NORTHERN UNITED STATES 
P. Tzeda. 
7. Pinus Teda, L. (LoBLOLLY OR 
OLD-FIELD PINE.) Leaves in twos and 
threes, 6 to 10 in. long, with elongated, 
close sheaths; slender and of a light | 
green color. Cones in pairs or soli- 
tary, lateral, 3 to 4 in. long, oblong, 
conical; the scales having short, rigid, 
straight spines. A large tree, 50 to 
130 ft. high, wild from Delaware, south 
and west, in swamps and old fields. 
8. Pinus ponderésa, Doug]. (WEsT- 
ERN YELLOW OR HEAVY-WOODED PINE.) 
Leaves in threes, 5 to 10 in. long, from 
short sheaths; broad, coarse, twisted, 
flexible, of a deep green color; branch- 
lets thick, reddish brown. Cones 3 to 
4 in. long, ovate, reflexed, clustered on 
short stems. Scales long, flattened, 
with small, sharp, recurved prickles. 
A large Pacifie coast species, 100 to 
300 ft. high, with rather coarse-grained, 
hard and heavy, whitish wood, and 
thick, deeply furrowed bark; begin- 
ning to be cultivated east. 
9. Pinus paltstris, Mill. (Lone- 
LEAVED OR SOUTHERN YELLOW PINE.) 
Leaves 
P. ponderoésa. 
P. palustris. 
10. Pinus rigida, Mill. 
3 together in bundles, 10 to 15 in. 
long, from a long, lacerated, light- 
colored sheath, of a bright green color, 
and crowded in dense clusters at the 
ends of the branches. Cones 6 to 10 in. 
long, usually cylindric, of a beautiful 
brown color, with thick seales, armed 
with very small, slightly recurved 
prickles. A rather tall pine, 75 ft. 
high, wild in the Southern States, and 
cultivated as far north as New Jersey, 
in sheltered situations. 
(PiTcH-PINE.) Leaves in threes, 3 to 5 
in. long, from short sheaths; rigid and flattened, Cones ovate, 1 in. 
