tt Leaves in fasicles of three, rarely four. 
* Leaves 10 cm. or longer, rather stout. 
4,P. rigida Miller. 
Pinus (rigida) folits ternis conts longioribus 
sguamis rigidtoribus &c. Miller, \. c. Sarg. 
Silva 11: 115. t. 579; Man. 20. Hough, Trees 
Orth. (35:0. 
Pitcu PINE. 
A tree reaching a height of 20 m. or more, with spread- 
ing branches and resembling somewhat Pnus virgint- 
ana; leaves 2 mm. wide, of a bluish green color; cones 
about 4 cm. long, and as broad when open; scales armed 
with weak prickles. 
Pormineforestsan places, of scattered 
in P. virginiana areas. 
** Leaves 15 cm. or longer, rather slender. 
5. P. Taeda L. 
Pinus virginiana tenutfolia tripilis s. ternis ple- 
rumgue ex uno folliculo setis, strobilis majort- _ 
bus. Pluk. Alm. 297. 
Te agede 7s Sp. i 100) Sa71e770,, olla) ties 
Itt ntt..57 7.5755) ian. 19. ¢7o7e7,. Drees 02540, 
FieLp- or LOBLOLLY PINE. 
A tall tree, sometimes 40 m. or higher, with spreading 
branches; leaves flexible, of a light green color; cones 
g cm. or longer, 7 cm. in diameter when open; scales 
armed with short prickles. 
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