Explanation of Plate III. 



Sod. Puccinia muhlenbergi.e Artk. & Holw. 



On Muhlenbergia racemosa (Michx.) B. S. P., from Nebraska. 

 One uredospore and five teleutospores. 



501?. Puccinia muhlenbergia Arth. & Holw. 



On Muhlenbergia racemosa (Michx.) P.. S. P., from Kansas. 

 Three uredospores and four teleutospores. 



51a. Puccinia amphigena Diet. 



On Calamovilfa longifolia (Hook.) Hack., from Illinois. 

 Four uredospores and eight teleutospores. 



5i£. Puccinia amphigena Diet. 



On Calamovilfa longifolia (Hook.) Hack., from Illinois. 

 Two uredospores and four teleutospores. 



5ir. Puccinia amphigena Diet. 



On Calamovilfa longifolia (Hook.) Hack., from Nebraska. 

 Two uredospores and six teleutospores. 



