2IO 



Picradenia acaulis, (Niitt.) Britton. Stemless Picradenia. 



Actinella acmdis^ Nutt. 



lu dry, gravelly or sandy soils in the Black Hills, and 

 on the hills and buttes from the Missouri valley westward. 



Helenium aiitmnnale, L. Sneezewort. 



In low, wet places in the Minnesota, Sioux and James 

 valleys. 



Gaillardia aristata, Pursh. Great Flowered Gaillardia. 

 On dry gravelly banks and knolls in the Minnesota 

 valley and the Black Hills. 



Dysodia papposa, (Vent) A. S. Hitchcock. Fetid Mari- 

 gold. 

 Dysodia chrysanthemoides^ Lag. 



In low places along streams from the James valley 

 westward. In many places in the Missouri valley it has 

 become a bad weed. 



Achillea Millefolium, L. Yarrow. 



In fields and waste places in the Minnesota and Sioux 

 valleys, and in the Black Hills. 



Aiithemis Cotula, L. Mayweed. 



In waste places from the Missouri valley eastward and 

 in the Black Hills. 



Clirysanthenium Leucaiitlieniuiii, L. White Daisy. 

 Sparingly introduced in the Sioux valley. 



Taiiacetuni vulgare, L. Tansy. 



Escaped from gardens in the Sioux and James valleys, 

 rare. 



Artemisia Canadensis, Michx. Canada Wormwood. 

 On sandy hillsides in the Black Hills. 



Artemisia cavidata, Michx. Wild Wormwood. 

 In sandy soils throughout the state. 



Artemisia dracunculoides, Pursh. Common Worm- 

 wood. 



In thickets and on prairies throughout the state. 



