ACERACEAE 435 



Common throughout the range except inand nearthe pine-barrens, 

 there replaced by A. caroliniamim; increasing northward. 



3. A. carolinianum Walt. In moist soil: E. Mass. to N. J., 



Fla. and Tex. 



N. Y. Rare on L. I. and S. I. 



N. J. Middlesex and Monmouth counties, increasing and be- 

 coming common southward, especially in the pine-barrens. 

 Pa. Bucks Co. 



4. A. Saccharum Marsh. In rich woods: Newf. to Man., south 



to Fla. and Tex. 



Conn. Rare as a wild plant near the coast, increasing northward. 

 N. Y. Rare on L. I., unknown on S. I. as a wild plant; commonly 

 planted. Rare in the lower Hudson Valley, increasing and 

 becoming common northward. 

 N. J. Hudson, Mercer and Essex counties, increasing and com- 

 mon northward 

 Pa. Throughout the state. 



Tertiary, o: Cretaceous, 0: Older Formations, increasing north- 

 ward. 117-220 days. Sea level-4,000 ft. 



5. A. nigrum Michx. In woods: Ont. and Vt. to Ga., Minn., 



La. and Ark. 



Known only from Salisbury, Conn., Hyde Park, N. Y., Locktown, 

 Far-Hills, Little Falls and Newton, N. J., and from Bucks Co., 

 Pa. Very rare and rather inexplicably scattered. 



6. A. pennsylvanicum L. In rocky woods: N. S. to Lake 



Superior and along the mountains to Ga. and Tenn. 



Conn. Not uncommon in northwestern Litchfield Co., rare and 



perhaps wanting elsewhere. 

 N. Y. From the southern end of the Highlands of the Hudson 



northward, there common, unknown elsewhere. 

 N. J. Rare in Somerset Co., thence increasing northward. 

 Pa. Luzerne, Lehigh, Carbon, Monroe and Bucks counties. 



Tertiary, o: Cretaceous, 0: Older Formations, increasing north- 

 ward. 117-159 days. Sea level-4,020 ft. 



7. A. spicatum Lam. Damp rocky woods: Newf. and James 



Bay to Man., south along the mountains to N. Car., Tenn. 



and Minn. 



Conn. Very rare along the coast, increasing northwestward. 



N. Y. Reported from but doubtfully in Westchester Co., rare at 



