58 LACKAWANNA AND WYOMING FLORA. 



CARPINUS, L. 



647. C. Caroliniana, WALTER. BLUE BEECH. WATER BEECH. 

 Along all the streams. Dudley. 



QUERCUS, L. 



648. Q. alba, L. WHITE OAK. Common. 



649. Q. bicolor, Willd. SWAMP WHITE OAK. Above Leggett's Gap ; 

 near head of Little Roaring Brook; Black Run near Mocanaqua. 

 Dudley. 



650. Q. Prinus, L. CHESTNUT OAK. Frequent on the mountains. 



651. Q. prinoides, Willd. E. of Penobscot Knob. Dudley. 



652. Q. rubra, L. RED OAK. Common. 



653. Q. coccinea, Wang. SCARLET OAK. Bald and Moosic Mt. 

 slopes ; frequent along the Lackawanna R.; Susquehanna, near 

 Plymouth and Mocanaqua. Dudley. 



654. Q. coccinea, Wang. Var. TINCTORIA, Gray. YELLOW OAK. 

 Frequent. 



655. Q. ilicifolia, Wang. BLACK SCRUB-OAK. Abundant on the 

 mountains, descending into the valleys at Taylorville. Dudley. Lu- 

 zerne, etc. Thurston. 



CASTANEA, TOURN. 



656. C. sativa, Mill. Var. AMERICANA. CHESTNUT. Common in 

 dry mountain woods. 



FAGUS, TOURN. 



657. F. ferruginea, Ait. BEECH. Along the river below Scranton ; 

 toward Dunmore; on the mountain slopes, and abundant in the richer 

 woods outside the valleys. 



84. SALICACE^E. 



SALIX, TOURN. 



658. S. nigra, Marshall. BLACK WILLOW. Abundant along the 

 Susquehanna R. from the New York line to Mocanaqua; on the 

 Lackawanna R.; low grounds on the mountains, and abundant along 

 streams outside the valleys. Its sister species S. amygdaloides has 

 not been observed in the Susquehanna Valley or tributaries either in 

 New York or Pennsylvania. Dudley. 



