AMMIACEAE 48 1 



18. Conioselinum Hoffm. 



1. C. chinense (L.) B. S. P. In cold swamps: Lab. to Mass., 



N. Y., N. Car., Minn., Wise, and Ind. Not Chinese. 



Conn. Northern part of Litchfield Co. 



N. Y. Rare in northern Westchester Co., increasing northward. 



N. J. Bergen and Sussex counties. 



Pa. Northampton Co. 



Tertiary, o: Cretaceous, o: Older Formations, rare and local in the 

 north. II7-I53 days. 500-3,365 ft. 



19. Angelica L. 



Umbels glabrous or nearly so; leaf-segments acute or acutish. 1. A. atropurpurea. 



Umbels densely tomentose; leaf segments tomentose. 2. A. villosa. 



i. A. atropurpurea L. In swamps and moist ground: Lab. to 

 Minn., Del. and 111. 



Rare and scattered over all the range, but not in the pine-barrens, 

 nor in the region immediately surrounding them. 



2. A. villosa (Walt.) B. S. P. In dry soil: Conn, to Fla., Minn., 



Tenn. and Mo. 



Throughout the range, except in the pine-barrens, there unknown; 

 nowhere common. 



20. Oxypolis Raf. 



1. O. rigidior (L.) Raf. (0. longifolia Britton). In swamps: N. 



Y. to Fla., Minn., Mo. and La. 



N. Y. Common on L. I. and S. I.; Piermont, Rockland Co.; 

 unknown elsewhere. 



N. J. Bergen, Middlesex and Mercer counties, increasing south- 

 ward, but rare or wanting in the pine-barrens. 



Pa. From Northampton and Bucks counties, southward. 



Tertiary, common on Beacon Hill: Cretaceous, common: Older 



Formations, decreasing northward. 169-220 days. About sea-level. 



21. Pastinaca L. 

 1. P. sativa L. Roadsides and waste places: E.N.Am. Natur- 

 alized from Europe. 



A common adventive in most parts of our range. 



22. Heracleum L. 

 1. H. lanatum Michx. In moist ground: Newf. to Alask... N. 

 Car., Mo., Utah and Cal. 



3- 



