512 ASCLEPIADACEAE 



io. A. variegata L. In dry woods and thickets: Conn, to 111., 



Fla., Ark. and La. 



Conn. Rare along the coast, apparently wanting elsewhere. 



N. Y. On L. I. and S. I. and up the Hudson Valley to northern 

 Westchester Co., unknown northward. 



N. J. Rare in Sussex, Passaic, Bergen, Somerset and Mercer 

 counties, thence increasing southward, but rare in the pine- 

 barrens. 



Pa. Northampton, Bucks, Delaware and Chester counties. 



Tertiary, wanting as a wild plant on Beacon Hill, common 



elsewhere: Cretaceous, common: Older Formations, decreasing 



and becoming scattered northward. 138-220 days. Sea level- 



1,100 ft. 



11. A. quadrifolia Jacq. Woods and thickets: Me. and Ont. to 



Minn., N. Car. and Ark. 



Conn. Throughout the state, nowhere common. 



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



and common northward; apparently wanting from the south 



side of L. I. 

 N. J. Occasional in Camden and Gloucester counties, near the 



Delaware; wanting thence to Middlesex Co., thence increasing 



and common northward; wanting in the pine-barrens and south 



of them. 

 Pa. Throughout the state, increasing northward. 



Tertiary, 0: Cretaceous, very rare: Older Formations, increasing 

 northward. 117-220 days. Sea level-4,020 ft. 



12. A. syriaca L. In fields and waste places: N. B. to the N. W. 



Terr., N. Car. and Kan. 



Throughout the range, nearly always as a weed, rather rare in 

 the pine-barrens. 



13. A. verticillata L. In dry fields and on hillsides: Me. and Ont. 



to N. W. Terr., Fla., Mex. and N. Mex. 



Throughout the range, but always rather scattered; rare in the 



pine-barrens. 



A. Bicknellii Vail. Known only from Van Cortlandt Park, N. Y., is parhaps a 

 hybrid between A. exaltata and A. amphxicaulis. 



2. Acerates Ell. 

 1. A. viridiflora (Raf.) Eaton. {A. viridiflora Ivesii Britton). In 

 dry sandy or rocky soil: Mass. to Ont., the N. W. Terr., Fla. 

 and Tex. 



