'I'kKKS OK THI". N'oKTIlK.k.N UNITED StATKS -M 



10. Leaves 2-I2 in. long; resin clucks parenchymatous: 

 carpellate cones oblong-conic, 1-2 in. lon.g, usually 

 upwardly curved. P. hanksiana. 



\. Pinus strobus L. White Pine. A large tree with 

 nearly smootli bark, except when old; branches horizontal in 

 whorls. Often forming dense forests. Wood soft and 

 straight-grained; used in enormous quantities for building 

 purposes. One of the most valuable timber trees in the world. 

 Has been more extensively used in America for lumber than 

 any other tree. Xewf. to Man., south along the Allegli. to 

 Ga. and to Ohio, 111. and la. 



\^. Pinus taeda L. Loblolly Pine. A large tree of 

 very rapid growth with spreading branches and tfiick, rugged 

 bark, flaky in age. Wood rather hard ; much used for lumber 

 in the south. Often growing in old fields. N. J. to Fla., Ark., 

 and Tex. 



.1. Pinus serotina ^l.\. Pond Pine. A tree, usually 

 with a short trunk and with the bark fissured into small plates. 

 In swamps and ponds. Wood soft, brittle, and coarse-grained. 

 Coastal plain. X. J. to Fla. 



4. Pinus rigida Mill. Pitch Pine. A tree with spread- 

 ing branches, the old bark rough and furrowed, flaky in strips. 

 Sprouts readily from the stump if cut down or burned. Wood 

 rather hard and brittle and full of resin ; used for fuel, char- 

 coal, and coarse lumber. A source of turpentine to a limited 

 extent. In dry, sandy or rocky soil. X. R. to Ont.. Tenn.. 

 Ohi... W. Va. and Ga" 



.'». Pinus resinosa Ait. Red Pine. A tall tree wiih 

 reddish bark. Wood rather hard but not very durable. Tur- 

 ])entine is obtained to a limited extent from, this species. .\ 

 tree of rapid growth. Xewf. to Man., Mass., Penu.. and 

 .\liim. 



(i. I'iitKs lari'cio Poir. Austrian Pine. A tall. open. 

 pyramidal tree of rapid growth with the thick spreading 

 branches in regular whorls. Often cultivated. h""rom Europe. 



7. rinus silvcs'iris L. Scotch Pine. .\ large and val- 

 uable tree with drooping branches ; much cultivated. From 

 it are obtained the red and yelbnv deal much used as lumber 

 in luu'ope. Xati\e of northern Europe. 



