118 Proceedings of the Ohio State Academy of Science 



bark flaky and dark-colored. Wood very resinous, soft and dur- 

 able but of poor quality. In sandy soil. L. I. to S. C, Ala., 

 Tenn., Ohio, and Ind. 



5. Pinus echinata Mill. Yellow Pine. A large tree with 

 spreading branches; leaves sometimes in 3's. Wood rather hard 

 and very valuable ; much used as lumber. Also furnishes some 

 turpentine. Produces shoots from stumps. In sandy soil. N. 

 Y. to Fla., III., Kan., and Tex. 



6. Pinus pungens Mx. f. Table-mountain Pine. A tree 

 with spreading branches, the old bark rough and in flakes, leaves 

 sometimes in 3's. Wood light and soft ; much used for charcoal. 

 N. J. to Ga. and Tenn. 



7. Pinus taeda L. Loblolly Pine. A tree of very rapid 

 growth with spreading branches and thick, 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. 



8. 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, charcoal, 

 and coarse lumber. A source of turpentine to a limited extent. 

 In dry, sandy or rocky soil. N. B. to Ont., Tenn., Ohio, W. Va., 

 and Ga. 



*. Pinus silves'tris L. Scotch Pine. A large and valuable 

 tree with drooping branches ; much cultivated. From it are ob- 

 tained the red and yellow deal much used as lumber in Europe. 



*. Pinus lari'cio Poir. Austrian Pine. A tall, open, py- 

 ramidal tree of rapid growth with the thick branches in regular 

 whorls. Often cultivated. 



3. Larix Adans. Larch. 



Tall pyramidal trees with horizontal or ascending branches 

 and with clusters of narrowly linear deciduous leaves on thick 

 wart-like dwarf branches. Carpellate cones woody, with nu- 

 merous carpels. 



1. Carpellate cones small, ^-f in. long, oval or almost globular; ovu- 

 liferous scales glabrous. L. laricina. 



