118 



Mycologia 



On Carduaceae [Helenieae] : 



Flaveria campestris J. R. Johnston (F, angustifolia A. Gray), 

 Manhattan, Kansas, Sept. 15, 1893, M. A. Carleton (type). 

 The collection on which this species is based has been included 

 with Puccinia Asteris Duby in the Arthur Herbarium, but it does 

 not seem to be that species, and an attempt to assign it elsewhere 

 with any degree of certainty has not been successful. It appears 

 to be a Micropuccinia and there are no species on related hosts 

 with which this can be logically placed. It differs from P. Acti- 

 nellae in the irregular lighter-colored spores borne in sori which 

 arise just below the epidermis and remain long covered. It is 

 most nearly like a collection on Hymenopappus carolinensis 

 (Lam.) Porter, which has been assigned to P. Grindeliae Pk. 



Puccinia Millefolii Fuckel 



This species is known from a few collections on Achillea Mille- 

 folium L. from California, Montana, and Oregon, and one on A. 

 lanulosa Nutt. from New Mexico. A careful comparison of this 

 species, using both American and European material, has failed to 

 reveal any morphological basis for separating this from P. conferta 

 Diet. & Holway, which occurs on various species of Artemisia 

 from North Dakota to northern Texas and westward to Washing- 

 ton and northern California, also in Europe. The hosts are closely 

 related and there seems no good reason for keeping them separate 

 for purposes of the North American Flora. 



The synonymy is as follows : 



Puccinia Millefolii Fuckel, Jahrb. Nass. Ver. Nat. 23—24: 55. 



1870 



Puccinia conferta Dietel & Holway ; Dietel, Erythea 1 : 250. 1893. 

 Puccinia recondita Dietel & Holway; Dietel, Erythea 2: 128. 



1894. Not P. recondita Rob. 1857. 

 Puccinia artemisiicola Sydow, Monog. Ured. 1 : 14. 1902. 

 Dasyspora conferta Arth. Result Sci. Congr. Bot. Vienne 346. 



1906. 



Dasyspora Millefolii Arth. Result Sci. Congr. Bot. Vienne '347. 

 1906. 



