1889.] 190 [Seymour. 



Mont. ; ii, in, Thompson Falls, Mont. Solidago : n, Medora, 

 Dak., Miles City and Helena, Mont. ; n, in, Detroit, Minn. 



Melampsora Idni, Tul., on Linum sp. ; n, in, Livingston, Mont. 



Melampsora Epilobii, (P.) Fckl., on Epilobium angustifolium ; 

 ii, in, Brainerd, Minn., Helena and Thompson Falls, Mont., 

 Kootenai and Sand Point, Idaho. Epilobium coloratum : ii, Boz- 

 eman, Mont., ii, in ; Livingston and Helena, Mont. 



Melampsora populina, Lev., on Popidus monilifera ; n, in, James- 

 town and Bismarck, Dak. Populus balsamifera; n, in, Helena, 

 Mont. Populus tremuloides ; n, in, Livingston, Mont. Very in- 

 jurious to young Cottonwood trees planted on tree claims. 



Melampsora salicina, Lev., on Salix sps. : n, Detroit, Minn., 

 Fargo and Bismarck, Dak., Billings, Livingston and Helena, 

 Mont. ; ii, in, Bozeman, Mont. 



Cronartium asclepiadeum, (Willd.) Fr., var. Thesii, B., on Co- 

 mandra umbellata; ii, in, Livingston, Mont. 



Cronartium asclepiadeum, (Willd.) Fr., var. Quercuum, B & C, 

 on Quercus coccinea; Brainerd, Minn. Exs.: Ell. & Ev. N. Am. 

 ,Fung. 1881 ; Fungi Europsei 3418. 



JEcidium Euplwrbioz, P., on Euphorbia sp. ; Miles City, Mont. 



Roestelia lacerata, (Sow.) Fr., on Crataegus sp. ; Bozeman, 

 Mont. Amelanchier alnifolia ; Livingston and Bozeman, Mont. 



USTILAGINE^. 



Ustilago subinclusa, Korn., on Carex trichocaipa, var. Deweyi ; 

 Bismarck, Dak. Exs. : Ell. & Ev. N. Am. Fung. 1889. 



Ustilago segetum, (Bull.)Ditm., on Oats ; Sand Point, Idaho ; Bil- 

 lings, Mont. 



Ustilago Babenhorstiana,, Kiihn, on Panicum glabrum; Minneap- 

 olis. 



Ustilago Syntherismos, S., on Cenchrus tribidoides ; St. Paul. 



Sorosporium Ellisii, Wint., var. occidentalism Seymour, on An- 

 dropogon furcatus ; Bismarck, Dak. 



In the original specimens described by Dr. Winter the undevel- 

 oped flowers are infested before the expansion of the inflorescence. 

 In these specimens, individual flowers of the fully expanded inflo- 

 rescence are affected. The spores measure 9-10 <u This has been 

 referred to Ustilago Andropogonis, Kell. and Swingle (Journ. Myc. 

 Vol. v, p. 12, pi. i, figs. 12-26) but the measurements of the spores 

 are lees than those of the Kansas specimens as there stated, also 



