THYMELEACEAE 459 



N.J. Rare and local in Mercer, Hunterdon, Union and Somerset 

 counties, increasing northward, not in the south. 



Pa. Northampton, Lehigh, Bucks and Montgomery counties. 

 Tertiary, o: Cretaceous, not very common: Older Formations, 



increasing northward. 117-220 days. Sea level-3,365 ft. 



33. V. arvensis Murr. In fields and along roadsides: Newf. to 



Mass. and Pa. Adventive from Europe. 

 Rare as an occasional escape, often wanting. 



34. V. Rafinesquii Greene: In woods and open places: N. Y. to 



Mich., Tex. and La. 



N. Y. The Highlands of the Hudson. 



N. J. Rare and local over most of the state, except in Morris, 



Sussex and Passaic counties and the pine-barrens, from which it 



is not reported. 

 Pa. Luzerne, Northampton, Lehigh and Bucks counties. 



Viola tricolor L., the progenitor of the garden pansy, is often common as an escape. 



CACTACEAE 

 1. Opuntia Mill. 

 1. O. Opuntia (L.) Coult. In dry sandy soil or on rocks: E. 

 Mass. to Pa. and Fla. 



Conn. Not uncommon along the coast, rare inland. 

 N. Y. Frequent on L. I; S. I., decreasing up the Hudson Valley 



to Saugerties, Ulster Co., and Pine Plains, Dutchess Co., but not 



known from the Catskills. 

 N. J. Rare and scattered in Morris, Hunterdon, Passiac and 



Bergen counties, increasing and becoming common southward, 



but unknown in the pine-barrens. 

 Pa. Philadelphia and Monroe counties. 



Tertiary, unknown on Beacon Hill, common elsewhere: Cre- 

 taceous, common: Older Formations, decreasing northward. 149- 

 220 days. Sea level-900 ft. 



THYMELEACEAE 

 1. Dirca L. 

 1. D. palustris L. In woods and thickets: N. B. to Minn.,Va., 

 Tenn., Mo. and Fla. 



Conn. Rare along the coast, increasing northwestward. 

 N. Y. Unknown on L. I. and in the Bronx, rare on S. I. and in 

 Westchester Co. ; increasing northward. 



