AMMIACEAE 477 



5. Washingtonia Raf. 



Style and stylopodium 1 mm. long or less. I. W. Claytoni. 



Style and stylopodium 2 mm. long. 2. W. longistylis. 



i. W. Claytoni (Michx.) Britton. In woods: N. S. to S. Dak., 

 Minn., Ala., 111. and Kan. 

 Conn. Throughout the state, apparently not very common in 



New London Co. 

 N. Y. On the side north of L. I., and on S. I., thence increasing 



and becoming common northward. 

 N. J. Reported from but doubtfully in Camden and Monmouth 



Counties; rare and local in Middlesex and Mercer counties, 



increasing northward. 

 Pa. Throughout the area, increasing northward. 



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

 ward. 117-220 days. Sea level-3,365 ft. 



2. W. longistylis (Torrey) Britton. In woods: N. S. to the N. W. 

 Terr., Ala., Tenn. and Kan. 



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

 very rare in the region just west of the barrens and on the coastal 

 plain of L. I. 



6. Torilis Adans. 



Umbels sessile or short-stalked, capitate, opposite the leaves. I. T. nodosa. 



Umbels compound, pedunclcd; rays slender. 2. T. Anthriscus. 



1. T. nodosa (L.) Gaertn. In waste places: Pa., Md. and Iowa. 



Adventive from Europe. 



Not common as an established adventive in Pa., otherwise un- 

 known. 



2. T. Anthriscus (L.) Gmel. In waste places: N. J. to D. C. 



and Ohio. Adventive from Europe. 

 Not common as an established adventive. 



7. Bupleurum [Tourn.] L. 

 1. B. rotundifolium L. In fields: N. H. to N. Car., S. Dak., 

 Kan. and Ark. Also in the Southwest. Naturalized from 

 Europe. 



Rare as a weed near the larger cities. 



8. Celeri Adans. 

 1. C. graveolens (L.) Britton. (Apium graveolens L.) . In waste 

 places, escaped from cultivation : E. U. S. Native of Europe. 

 A rare escape, from market gardens, sometimes persisting. 



