Explanation of Plate II. 



All figures uniformly magnified 470 diameters (drawn under a magnifica- 

 tion of 625 diamet-ers, and reduced to 470 diameters in engraving). 



LEPTO-UREDINE.-E. 



9a. PucciNiA VERONic.« (Schum.) Wint. f. /r«^W//^(?.t on Verotnca vinrinica. 



9b. PuccixiA VERONICA (Schum.) Wint. f ./<'/ .s/.s/cw^ OH Veronica vir<rinicii. 

 loa. PucciNiA XANTHXi Schw. on Xantliium canadense (Michigan). 

 lob. PucciNiA XANTHii Schw. on Xantliium canadense (California). 

 IOC PuccixiA x.\NTHii Schw. OH Xaiit/i luu canadense (Iowa), 

 iia. PuccixiA ASTERis Dubj on Aster inacrophvUus. 

 lib. PucciNiA ASTERIS Duby on Aster ckamissonis. 

 lie. PuccixiA A-STERis Duby on Senecio, sp. indet. 



12a. PuccixiA AXEMONES-viRUixiAX^ Schw. on Ancuioue cylindricn. 

 12b. PuccixiA AXEMOXES-viRUixiAX^ Schw. On Anemoue patens, var. 

 13. PuccixiA MESXiERiAXA ThUm. on Rkamnus crocea. 

 13. PuccixiA MESXIERIAXA Thum. On Rhamnus crocea. 



