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Mycologia 



the Ellis Herbarium at the New York Botanical Garden. It con- 

 sists of a single, long-petioled orbicular leaf with six groups of 

 aecia and about ten telia scattered over the under leaf surface. 

 Holway reported that this rust varied in no way from the eastern 

 specimens of Puccinia plumbaria Peck on Phlox divaricata and 

 that the host was probably some species of Phlox. At the time of 

 publishing my Allodus paper I had not examined carefully the 

 aeciospores and peridial cells of the species. I have now critically 

 studied it and believe it to be distinct from Puccinia plumbaria 

 and I think the host must certainly be some cruciferous plant 

 probably Cardamine Douglasii (Lam.) Britton as suggested by 

 Dr. N. L. Britton, who has carefully examined and compared the 

 type collection with phanerogamic collections. The aeciospores 

 are considerably larger than those of Puccinia plumbaria. 

 State College, Pa. 



