PHYLOGENY 



83 



From these considerations the probable phylogeny of the 

 Uredinales may be represented as in the following schemes. 



Ascomvcetes Basidiomvcetes 



Uredinales 



Ustilaginales 



Rhodophyceae 



Pucciniacese 



Endophyllum 



Coleosporiaceae 



Cronartiaceae 



(Endophyllum-like ) 



Melampsoraceae 



Primitive Uredine 



6—2 



