822 REPORT OF STATE GEOLOGIST. 



Tippecanoe (Cunningham); Daviess (Clements); Jefferson (J. 

 M. Coulter); Putnam (MacDougal); Jay, Delaware, Randolph, 

 and Wayne (Phinney); Noble (Yan G order); Franklin (Meyncke); 

 Gibson and Posey (Schneck); Clark (Baird and Taylor); Vermil- 

 lion (Wright); Cedar Lake (Deam); Fayette (Hessler); Vigo 

 (Blatchley); Hamilton (Wilson); Steuben (Bradner). 



E. marginata Pursh. White-margined Spurge. Showy Euphorbia. 



Introduced into the southern part of the State and largely 

 escaped from cultivation. In some regions the form has covered 

 large areas, especially rapid in its spread on the rocky slopes 

 of limestone hills. It has also invaded cultivated fields, especially 

 those with a coarse, rocky soil, and has become an annoying weed. 



Flowers from May until the late frosts. 



Jefferson (Barnes); Franklin (Meyncke); Gibson and Posey 

 (Schneck); Hamilton (Wilson). 



E. dentata Michx. Toothed Spurge. 



Abundant in many parts of the State. It is found most plen- 

 tifully at the base of limestone cliffs and in rich, sandy soils. 

 In either situation it is found in shaded locations. 



Flowers from July until October. 



Cass and Fayette (Hessler); Putnam (MacDougal); Vigo 

 (Blatchley); Franklin (Meyncke); Clark (Baird and Taylor); Ma- 

 rion and Montgomery. 



E. Ipecacuanha L. Wild Ipecac. 



In the southern part of the State in dry, sandy soil. Especially 

 frequent in the region of the Knobs. Locally used as an emetic. 

 Flowers from May until October. 

 Marion, Floyd, Scott, and Harrison. 



E heterophylla L. Various-leaved Spurge. 



This species has entered our flora from the west and is spar- 

 ingly found in a few western counties, growing on sandbanks or 

 barren hillsides. 



Flowers from April until the heaviest frosts. 



Vigo (Blatchley); Tippecanoe (Golden). 



E obtusata Pursh. 



This species has entered the flora from the south. It is re- 

 ported only from Gibson, though probably occurring in adjoining 

 counties. Found in dry soil. 



Flowers from March until August. 



