Seymour.! 
190 
[Feb. 6, 
Mont. ; ii, hi, Thompson Falls, Mont. Solidago: n, Medora, 
Dak., Miles City and Helena, Mont. ; n, hi, Detroit, Minn. 
Melampsora Lini , Tul., on Linum sp. ; n, hi, Livingston, Mont. 
Melampsora Epilobii , (P.) Fckl., on Epilobium angustifolium ; 
ii, hi, Brainerd, Minn., Helena and Thompson Falls, Mont., 
Kootenai and Sand Point, Idaho. Epilobium color atum: n, Boz- 
eman, Mont., ii, in ; Livingston and Helena, Mont. 
Melampsora populina, Lev., on Populus monilifera ; n, hi, James- 
town and Bismarck, Dak. Populus balsamifera ; n, hi, Helena, 
Mont. Populus tremuloides ; n, hi, 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, hi, Bozeman, Mont. 
Cronartium asdepiadeum , (Willd.) Fr., var. Thesii , B., on Co- 
mandra umbellata; ii, hi, Livingston, Mont. 
Cronartium asdepiadeum , (Willd.) Fr., var. Quercuum , B & C., 
on Quercus coccinea; Brainerd, Minn. Exs. : Ell. & Ev. N. Am. 
Fung. 1881 ; Fungi Europsei 3418. 
AEcidium Euphorbiae , P., on Euphorbia sp. ; Miles City, Mont. 
Roestelia lacerata , (Sow.) Fr., on Crataegus sp. ; Bozeman, 
Mont. Amelanchier alnifolia; Livingston and Bozeman, Mont. 
USTILAGINE^]. 
Ustilago subindusa , Korn., on Carex trichocarpa , var. Deweyi; 
Bismarck, Dak. Exs. : Ell. & Ev. N. Am. Fung. 1889. 
Ustilago segetum , (Bull.)Ditm., on Oats ; Sand Point, Idaho ; Bil- 
lings, Mont. 
Ustilago Rabenhorstiana , Kuhn, on Panicum glabrum ; Minneap- 
olis. 
Ustilago Syntherismce , S., on Cenchrus tribuloides; 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 //. 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 less than those of the Kansas specimens as there stated, also 
