636 



EUPHORBIACEAE 



50 



Map 1313 



Polygala verticillata L. 



50 



Map 1315 



Polygala cruciata L. 



7. Polygala cruciata L. Map 1315. Most often in moist sandy soil on 

 the border between a black oak woods and a marsh and usually associated 

 with Gaultheria procumbens. Sometimes in a moister location and infre- 

 quent in a moist prairie habitat. Local but usually frequent where it is 

 found. 



Maine to Minn., southw. to Fla. and La. 



8. Polygala sanguinea L. (Polygala viridescens L.) Map 1316. This 

 species has three color forms, purple, white, and intermediate. Linnaeus 

 described the first as Polygala sanguinea and the last as Polygala virides- 

 cens. The last named plant is now regarded as a form of Polygala 

 sanguinea. The white form has also been named but has not been found 

 in Indiana. Our plants vary from almost white to purplish but most of 

 them are more or less of a deep rose color. 



This species is found in poor and slightly acid soil of old fallow fields, 

 of open wooded slopes, of the borders of marshes, in suitable habitats along 

 roads and railroads, and in sandy wheat stubble fields. It is usually infre- 

 quent and much scattered but I once saw it as a common plant in a moist 

 wheat stubble field in Jasper County. 



N. S., Ont. to Minn., southw. to N. C, La., and Kans. 



147. EUPHORBIACEAE J. St. Hil. Spurge Family 



Flowers not in an involucre; calyx well developed; juice not milky. 

 Ovules 1 in each cell of the ovary. 



Corolla present in either the staminate or pistillate flowers or in both ; pubescence 

 stellate. 



Ovary and fruit 3- (rarely 2-4-) celled, a dehiscent capsule 



4348. Croton, p. 637. 



Ovary and fruit 1-celled, an achenelike indehiscent capsule 



4350. Crotonoposis, p. 638. 



Corolla none; pubescence not stellate. 



Bracts of the pistillate flowers cleft into 5-15 lobes; styles many-cleft 



4407. Acalypha, p. 639. 



