292 
Pinus, section II 
Letters a general Seiictien are as follows: 
M, North M 
BOTANICAL GAZETTE 
TABLE II 
A, Atlantic; P, Pacific; 
MEAN DIAMETER OF SPRING TRACHEIDS| 
Pseudo- 
strobus 
Taeda 
Pinaster 
DISTRIBUTION, SOIL, ALTITUDE, ETC. 
1. P. ponderosa. .. 
Se 
2. P. tuberculata. . 
Seer eteee 
4. P. Murrayana. . 
at ie ee Ba oe ae) 
&.. P. mricata:;'., 
(a ga eee 
6. P. mops. s oS; 
9. BP. contorte. 
8. P. arizonica. ., 
9. P. chihuahuana. 
10. P. Torreyana.. . 
11. P. pungens.. 
oe 
29.5(P) 
30(P) 
33(A) 
See eee eee 
“a an one ee 
70) 8 8268 eo 
34(P) 
35-5(P) 
36(A) 
39(A) 
Dry rocky ridges, dry valleys, 
ridges of 
Coast Mts. pe ‘om Oregon to 
California, Ae ooo ft.; 
nearly subtropical. 
Dry gravelly ibis nds, sandy 
plains, ie deep swamps; 
eorgia; warm 
d 
Cass at ith 
te emperate sometimes wi 
Fase inata. 
‘asks tos. —— a er 
zon 
gravel, sea slopes of Coast 
— of S. California; sub- 
vee il, dry heights; 
S a b = se eights; 
"N ew ver outh Carolina 
is € y 
assume 
often shes it 
pate prostrate ‘habit; sub- 
Alle- 
Dry poe aoe of the 
ghany Mts to 3000 ft.; 
warm ‘canesie 
