Jackson : New Rusts on Carduaceae 



115 



the host, which is identical with the host for Puccinia nuda, is 

 probably also Madia, Hemizonia, Hemizonella, or some close 

 relative. 



The synonymy, etc., of the two species, according to the inter- 

 pretation above, is as follows : 



Coleosporium Madiae Cooke, Grevillea 7: 107. 1879 



Stichospora Madiae Sydow, Ann. Myc. 2 : 30. 1904. 

 Coleosporium Arnicale Arth. N. Am. Flora 7 : 94. 1907. 

 On Carduaceae [Heliantheae] : 



Anisocarpua, Centromadia, Harpaecarpus, Hemizonia, Ma- 

 daria, Madia, Zonanthemus. 

 Type locality : Sierra Nevada, California, on Madia Nuttallii. 

 Distribution : British Columbia to central California. 



Puccinia nuda Ellis & Ev., Jour. Myc. 3 : 57. 1887 



Puccinia Hemizoniae Ellis & Tracy, Jour. Myc. 7: 43. 1891. 

 Puccinia Lagophyllae Dietel & Holway ; Dietel, Erythea 1 : 250. 



1893. 



Dicaeoma Hemizoniae Kuntze, Rev. Gen. 3 3 : 469. 1898. 

 Dicaeoma nudum Kuntze, Rev. Gen. 3 3 : 469. 1898. 

 Puccinia Madiae Sydow, Monog. Ured. 1 : 121. 1902. 



On Carduaceae [Heliantheae] : 



Calycadenia, Hemizonia, Lagophylla, Madaria, Madia. 



Type locality : Falcon Valley, Washington, on " Arnica foli- 

 osa" ; error for Madia ( ?) sp. 



Distribution : Washington to central California ; also in South 

 America. 



Puccinia Melampodii Dietel & Holway 



A group of short-cycled species of Puccinia occurring in sub- 

 tropical regions of North America on a number of Carduaceous 

 hosts of the tribe Heliantheae have proven to be very puzzling. 

 These include especially the following : 



P. Melampodii Dietel & Holway, on Melampodium divaricatum, 



from Guatemala and Morelos. 

 P. Synedrellae P. Henn., on Synedrclla nodi flora, from the West 



Indies and Panama ; also in South America. 



