6l2 COMPOSITAE 



20. A. junceus Ait. In swamps and bogs: N. S. to N. W. Terr., 



south to N. J., Ohio, Wise, and in the Rocky Mts. 



Known in our area only from Columbia Co., N. Y., Sussex Co., 

 N.J. and Monroe Co., Pa. These regions are north of the moraine, 

 have a growing season of 123-138 days and an elevation of 550- 

 1,900 ft. Most common on limestone. 



21. A. novi-belgii L. (A. novi-belgii litoreus A. Gray. A. novi- 



belgii Brittonii Burgess, A. novi-belgii atlanticas Burgess 

 A. novi-belgii elodes (T. & G.) A. Gray). In swamps: 

 Newf. to Me. and Ga., mostly near the coast. 

 Conn. Common along the coast decreasing and perhaps wanting 



northward, except in the Connecticut River Valley. 

 N. Y. Common on L. I. and S. L, and up the Hudson Valley to 



Dutchess Co., unknown northward and in the Catskills. 

 N. J. Throughout the state, common especially southward. 

 Pa. Delaware, Bucks and Montgomery counties. 



Tertiary, common: Cretaceous, common: Older Formations, 

 decreasing northward. 138-220 days. Sea level-1,080 ft. 



22. A. longifolius Lam. In swamps and moist ground: Lab. to 



Sask., N. Eng., Ont. and Mont. 



Known, in our range, only from Farmington and Litchfield, Conn. 



23. A. concolor L. In dry sandy soil: eastern Mass. and R. I. 



to Fla. and La., mostly near the coast. 



N. Y. Common on the south side of L. I., rare on the west side of 



S. I., unknown elsewhere. 

 N. J. Middlesex and Monmouth counties, increasing southward, 



especially in the pine-barrens. 



Tertiary, common: Cretaceous, common: Older Formations, rare 

 and restricted to a single station in the glaciated part of S. I., 

 168-220 days. About sea level. 



24. A. spectabilis Ait. In dry sandy soil: Mass. to Del., mostly 



near the coast. 



Conn. Very rare along the coast in New London and New Haven 



counties, unknown elsewhere. 

 N. Y. Common on L. I.; S. I., also rare in Rockland Co. 

 N.J. Rare in Morris and Mercer counties,* thence increasing and 



common on the coastal plain, especially in the pine-barrens. 



Tertiary, common: Cretaceous, less common: Older Formations, 

 rare and local.* 168-220 days. About sea level. 

 The recorded occurrence of A. surculosus Michx. in our range was erroneously based 

 on some New Jersey specimens of A. spectabilis. 



* See Introduction paragraph 7. 



