PLANTS OF MANHATTAN AND BLUE RAPIDS IO5 



Euphorbiaceae. Spurge Family. 

 Croton capitatus Michx. Hogwort. 



Manhattan. Occasional on prairies. 

 Croton monanthogynous Michx. 



Hillsides. Common. June 10 (12). 

 Acalypha ostryaejolia Ridd. Three-seeded Mercury. 



Manhattan. July 20. 

 Acalypha virginica L. Three-seeded Mercury. 



Thickets and roadsides. Common. June 30. 

 Tragia ramosa Torr. Stinging Spurge. 



Hillsides. Frequent. May 25. This common name is here 

 proposed for this insignificant but interesting plant. 



Euphorbia petaloidea Engelm. White-flowered Spurge. 



Manhattan. Sandy soil. 

 Euphorbia Nuttallii (Engelm.) Small. 



Hillsides. Common. June 25 (24). 

 Euphorbia serpens H. B. K. Round-leaved Spurge. . 



Roadsides and fields. Common. June 25. 

 Euphorbia glyptosperma Engelm. 



Hillsides and dry soil. Frequent. 

 Euphorbia maculata L. Spotted Spurge. 



Fields and roadsides. Common. June 5. 

 Euphorbia stictospora Engelm. 



Hillsides and dry roadsides. Common. June 15. 

 Euphorbia nutans Lag. Upright Spotted Spurge. 



Roadsides and fields. Common. June 10. 

 Euphorbia hexagona Nutt. Angled Spurge. 



Manhattan, occasional in sandy soil. Once collected at 

 Blue Rapids along the railroad track. July 20. 

 Euphorbia corollata L. Flowering Spurge. 



Roadsides and fields. Frequent. July 30 (30). 

 Euphorbia marginata Pursh. Snow-on-the-Mountain. 



Hillsides, especially where pastured too heavily. Common. 

 July 15 (14). 



Euphorbia dentata Michx. Toothed Spurge. 



Fields and roadsides. Common. June 15 (16). Two forms; 

 one with thick, dark-green leaves and somewhat angled seeds; 

 the other with thin, light-green leaves usually with small red spots, 

 and the uppermost often blotched with pinkish at the base, and 

 the seeds more rounded. Flowering at the same time. 



