140 \ 



troublesome weed in waste places, but easily destroyed 

 by cultivation. When young and tender it is readily 

 eaten by sheep. 



AMARANTHACE^E. Amaranth Family. 



Amaraiithus retroflexus, L. Rough Pigweed. 



An introduced weed in waste soil throughout the state, 

 but not common in the central and western part. 



Amaraiithus hybridus, L. Slender Pigweed. 



A naturalized weed in waste places from the Missouri 

 river eastward, less common than the last. 



Amaraiithus blitoides, S. Wats. Prostrate Amaranth. 



In cultivated and waste fields from the Missouri river 

 eastward. 



Amaraiithus grsecizaiis, L. Tumbleweed. 



A common weed in cultivated ground throughout the 

 state. 



Acnicla tamariscina, (Nutt.) Wood. Western Water- 

 hemp. 



Occasional in swamps and low places, which ate 

 somewhat brackish, from the Missouri river eastward. 



Aciiida tamarascina tnberculata, (Moq.) Uline & 

 Bray. Tubercaled Water-hemp. 

 Same range as the last. 



NYCTAGINACE^E. Four-o'clock Family. 



Allioiiia iiyctagiiiea, Michx. Heart-leaved Umbrella- 

 wort. 



In thickets throughout the state. 



Allioiiia albicla, Walt. Pale Umbrellawort. 

 In the Black Hills. 



Allioiiia hirsuta, Pursh. Hairy Umbrellawort. 

 In dry soil throughout the state. 



