ORDER UREDINALES (tHE RUSTS) 



401 



Fig. 133. Subclass Teliosporeae, Order Uredinales. Types of uredia. (A) Uredium 

 with peridium in Melampsoridium beiulinum (Pers.) Kleb. ; on either side a portion of a 

 tehal sorus. (B) Uredium without peridium but with numerous capitate paraphyses 

 among the urediospores, in Melampsora hehoscopiae (Pers.) Cast. (C) Urediospores of 

 Coleosporium soUdaginis (Schw.) Thlxm., in a chain. (D) Extrastomatal uredium of 

 Prospodiurn plagiopus (Mont.) Arth. (A-B, after Sappin-Trouffy : Le Botaniste, 

 5:59-244. C, after Christman: Botan Gaz., 44(2):81-101. D, after Cummins: Ann. 

 ilfycoL, 35(1) :15-21.) 



