HUME — FUNGI OF COLORADO, WYOMING AND NEBRASKA. 253 



Peridermium cerebrum Pk. On branches of Pinus Murray ana, 

 (91). Found throughout the region but never abundant. 



Uredo ribicola C. & E. On leaves oi Ribes aureuffi, Beaver Creek, 

 Col., (211). 



Uredo speciosa Pk. On leaves of Rubus deliciosus, Golden, Col., 

 (28); Fort Collins, Col., (93); N. Cheyenne Cafion, Col., (93); Man- 

 itou Trail, Col., (95). 



USTILAGIN^. 



Ustilago aristidcB Pk. In ovaries of Arisiida purpurea, McCook, 

 Neb., (96). This was locally abundant. 



Ustilago Avence (Pers.) Jens. In ovaries of Avena sativa, McCook, 

 Neb., (97); Crete, Neb., (98). 



Ustilago Buchloes Ell. &: Tracy. In ovaries of Buchloe dacty hides, 

 Lincoln, Neb., (100). A few specimens were collected at Lincoln. 

 It was not abundant. 



Ustilago Tritici (?er?,.) Jens. In ovaries of Triticum vulgare, Crete, 

 Neb., (99). 



Eutyloma Physalides (Kalchlbr & Cooke) Wint. On leaves of Phy- 

 salis sp., McCook, Neb., ( — ). This material was in excellent condi- 

 tion, spores germinating. 



Sphacelotheca hydropiperis (Schum.) De Bary. In ovaries of Poly- 

 onum bistorta, Rapid Creek Park, Wyo., (lor); Polygonum viviporum, 

 Rapid Creek Park, Wyo., 102. Not abundant. 



Schizonella melanogramma (DC.) Schroet. On leaves of Carex sp., 

 above Big Horn, Wyo., (105). 



Sorosporium Ellisii Wint. In ovaries of Andropogon furcatus , Mc- 

 Cook, Neb., (103). For a considerable distance this fungus was com- 

 mon along the roadside. 



PERONSPEROCE^.. 



Cystopus Bliti (Biv.) De Bary. On leaves of Amarantus retroflexus, 

 Lincoln, Neb., (154). 



Cystopus PortulaccB (DC.) Lev. On leaves of Portulaca oleracea, 

 McCook, Neb., (120). 



Cystopics Tragopogonis (Pers.) Schroet. On leaves of Artemesia bien- 



[Proc, D. A. N. S., Vol. VII.] 31 [ May 12, 1899.] 



