20 7 



Doellingeria umbellata, (Mill.) Nees. Flat-topped 

 White Aster. 

 Aster umbellatus, Mill. 



In swampy places in shaded ravines in the Minnesota 

 valley. 



Filago prolifera, (Nutt.) Britton. Filago. 

 Evax prolifera, Nutt. 



On dry hills near Hot Springs in the Black Hills. 



Anteimaria dioica, (L.) Gaertn. Mountain Everlasting. 

 In the borders of open woods in the Black Hills. 



Anteimaria iieodioica, Greene. Smaller Cats-foot. 



In shady places in the Black Hills. Two of Dr. Ryd- 

 'berg's specimens; 795 collected near Hermosa, 793 near 

 Hot Springs are also referred to this species. They differ 

 from the type in having the leaves tomentose above. 



Aiitennaria campestris, Rydberg. Prairie Cats-foot. 



On prairies throughout the state; this is the common 

 species which has been regarded as a form of A. plant- 

 aginifolia which has not yet been collected in the state. 

 It is likely that it occurs in the open woods in the Min- 

 nesota and Sioux valleys. 



Anteimaria Aprica, Greene. 

 In the Bad Lands. 



Aiitennaria parvifolia, Nutt. 



Along Spring Lake in Brown county. 



Aiiaphalis margaritacea, (L.) .B. & H. 

 Antennaria margaritacea, Hook. 

 In dry soils in the Black Hills. 



Silphium perfoliatum, L. Cup Plant. 



In moist thickets in the Minnesota and Sioux valleys. 



Silphium laciiiiatnm, L. Compass Plant. 



In the southern part of the Sioux, James and Missouri 

 valleys. Sioux Falls, Yankton, Charles Mix counties. 



