424 EUPHORBIACEAE 



2. Crotonopsis Michx. 

 1. C. linearis Michx. In dry sandy soil: Conn, and N. J., to 

 Kan., south to Fla. and Tex. 

 Conn. Milford. 

 N. J. Not uncommon in the pine-barrens, decreasing in the region 



north and west of them; unknown elsewhere. 

 Pa. Near Bristol, Bucks Co. Not recently collected. 



Tertiary, more common on Beacon Hill than elsewhere. Cre- 

 taceous, decreasing: Older Formations, unknown except for its 

 probably adventive occurrence in Conn. 179-220 days. About 

 sea level. 



3. Acalypha L. 



Staminate and pistillate flowers in separate spikes or racemes; cap- 

 sule spiny. 1. A. oslryaefolia. 

 Staminate and pistillate flowers in the same spike or raceme; cap- 

 sule smooth. 

 Plant not glandular; bract palmately many lobed. 2. A. virginica. 

 Plant glandular; bract many-cleft. 3- A, gracilens. 



1. A. ostryaefolia Ridd. In fields and waste places: N. J. to 



Kan., Fla. and Mex. Rare in our area. 



Known only from near Lawrenceville, Princeton, Trenton and 

 Closter, N. J. and Morrisville, Bucks Co., Pa. Not recently 

 collected. 



2. A. virginica L. In woods and thickets: N. S. to Minn., Kan., 



Fla. and Tex. 



Common, in most parts of our range, except in the pine-barrens, 

 there rare or wanting; often a weed. 



3. A. gracilens A. Gray. In dry woods and thickets: Mass. to 



Kan., Fla. and Tex. 



Occasional throughout the area, frequently wanting; less com- 

 mon in the pine-barrens than elsewhere. 



4. Ricinus [Tourn.] L. 



I. R. communis L. In waste places: E. N. Am. Native of 

 Africa and Asia. 

 A rare escape from gardens in most parts of our range. 



5. Chamaesyce S. F. Gray. 



Leaves entire, seeds smooth or roughened. 1 . C. polygonifolia. 



Leaves serrate or dentate; plants prostrate. 



Herbage glabrous. 2. C. glyptosperma. 



