HUME FUNGI OF COLORADO, WYOMING AND NEBRASKA. 25 I 



Phragmidium Fragariastri {T)C^ Schroet. On leaves and stems of 

 Potentilla gracilis var. fastigiata, Dome' Lake, Wyo., (89); Beaver 

 Creek, Col., (72). This host was abundant at. the timber line, and in 

 places nearly all the plants were affected. 



Phragmidium Rubi (Pers.) Wint. On leaves of Rubus deliciosus. 

 Fort Collins, Col., (92). 



Phragmidium subcorficium (Schrank) Wint. (Jn leaves of Rosa sp., 

 Long Gulch, Larimer County, Col., (44); N. Cheyenne Canon, (67); 

 Fort Collins, Col., (68); Beaver Creek, Col., (.77). Abundant in some 

 places. 



Chrysomyxa Pirolce (DC.) Rostr. On leaves of Piro/a el/ipfica, 

 Beaver Creek, Larimer County, Col., (55). Common. 



Thecopsora Vacciniorum (Link) Karst. On leaves of Vaccinum%-^., 

 Beaver Creek, Larimer County, Col., (150). 



Calyptospora Gappertiana J. Kiihn. On twigs of Vaccinum sp. , 

 Beaver Creek, Larimer County, Col., (150). 



^Pcidium abuudans Pk. On foliage of Symphoricarpos raccmosus, 

 Fort Collins, Col., (7); above Big Horn, Wyo., {2>}>)'^ L^, Porte, (43). 

 This Symphoricarpos is abundant throughout the eastern slopes of the 

 Rocky Mountains and one is almost certain to find the .Lcidium on 

 most of the plants. 



.Pcidiiim Allenii Clinton. On foliage of Shepherdia Canadensis, 

 Latimer County, Col., (11), (34), (53). Shepherdia argentea, Sheri- 

 dan, Wyo., (13), (90). The tecidium on S. Canadensis was quite 

 common in higher altitudes ; on .5". argentea only a few specimens 

 were found. 



.■Ecidium aquilegia Pers. On leaves and petioles of Aquilegia caerulea, 

 Beaver Creek, Col., (51). Abundant under a rocky ledge above the 

 timber line. 



yEcidium clematidis DC. On foliage and stems of Clematis ligustici- 

 folia, Golden, Col., (6); Fort Collins, Col., (27), (40); Greely, Col., 

 (29); La Porte, Col., {d^). The host grows abundantly in moist 

 woods at lower altitudes. The fungus is very common, involving 

 stems, petioles, and leaves, twisting and distorting the plant. 



Aicidium compositarum Mart., var. Helianthi ^\xxr\\\. On leaves of 

 Helianthus annuus, Fort Morgan, Col., (26); Helianthus grosse-serra- 

 tus,} Fort Collins, Col., (41). Not abundant at Fort Morgan, but 

 abundant in moist woods near Fort Collins. 



