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troublesome weed in waste places, but easily destroyed 

 by cultivation. When young and tender it is readily 

 eaten by sheep. 



Amaranthace^. — Amaranth Family. 



Aiuaranthiis retroliexus, L. Rough Pigweed. 



An introduced weed in'waste soil throughout the state, 

 but not common in the central and western part. 



Aiiiarantlms hybridiis, h. Slender Pigweed. 



A naturalized weed in waste places from the Missouri 

 river eastward, less common than the last. 



Ainaranthus blitoicles, S. Wats. Prostrate Amaranth. 



In cultivated and waste fields from the Missouri river 

 eastward. 



Amaraiitlms grsecizans, L. Tumbleweed. 



A common weed in cultivated ground throughout the 

 state. 



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

 hemp. 



Occasional in swamps and low places, which are 

 somewhat brackish, from the Missouri river eastward. 



Acnida tainarascina tiiberciilata, (Moq.) Uline & 

 Bray. Tubercaled Water-hemp. 

 Same range as the last. 



NycTaginace^. — Four-o'clock Family. 



Allionia uyctagiiiea, Michx. Heart-leaved Umbrella- 

 wort. 



In thickets throughout the state. 



Allionia albida, Walt. Pale Umbrellawort. 

 In the Black Hills. 



Allionia liirsnta, Pursh. Hairy Umbrellawort. 

 In dry soil throughout the state. 



