l68 UNIVERSITY OF MISSOURI STUDIES [31° 



585. P. sanguinea L. [/". viridesceiu L.]. Purple milk- 

 wort. 



Red clay barrens, but also in low wild meadows. 

 Nova Scotia to Minnesota; North Carolina to the 

 Indian Territory. 



Family 59. EUPHORBIACEAE J. St. Hil. Spurge family. 



230. PHYLLANTHUS L. 



586. P. Carolinensis Walt. 

 Flats of Hinkson creek; very rare. 



Pennsylvania to Illinois and Missouri; Florida to 

 Texas and Central America. 



231. OROTON L. Croton. 



587. O. capitatus Michx. 



Dry open places and roadsides; common. 

 New Jersey to Iowa; Georgia to Texas. 



588. O. monanthogynus Michx. 



Common in dry open places, roadsides and yards. 

 North Carolina to Iowa and Kansas; Florida to Texas 

 and Mexico. 



232. AOALYPHA L. Three-seeded mercury. 



589. A. Virginica L. 



Common in low woods and waste places. 



Ontario and Michigan to Minnesota; Florida to Texas. 



590. A. gracilens Gray [A. Virginica gracilens (Gray) 



Muell.]. 

 Frequent on cliffs and in dry open thickets. 

 Massachusetts to Michigan and Kansas; Florida to 

 Texas. 



233. RIOINUS L. Castor bean. 



591. R. communis L. Palma Christi. 

 A frequent escape in waste places. 

 Africa, thence to all hot and warm lands. 



