IOWA ACADEMY OF SCIENCES. 
143 
U. Trifolii (Hedw.) Lev. 
Axbundant in September on Trifolium pratense. This fun- 
gus has been increasing in severity, large patches of 
second crop of clover being affected. 
U. appendiculatus (Pers.) Link. 
Abundant on Strophostyles angulosa, but not observed 
here on Phaseolus vulgaris. At Indianola it was, 
however, destructive to the cultivated bean. 
TJ. Eupliorhice Cooke & Peck. 
Abundant in August and July on Euphorbia maculata and 
E. Preslii. 
Melampsora farinosa (Pers.) Schroet. 
Abundant on Saiix, August and September. 
M. Populina (Jacq.) Lev. 
Abundant on Populus monilifera, August and September. 
Puccinia Heliantlii Schw. 
Abundant on Helianthus tuberosus and H. grosse-serratus 
July, August and September. In August especially 
destructive to cultivated Helianthus annuus. 
P. Convolvuli (Pers.) Cast. 
Abundant on Convolvulus sepium July, August and Sep- 
tember. 
Gymnosporangium macropus Link. 
Teleuto stage on Juniperus Virginiana not as abundant as 
in 1894; nor was the secidium (Roestelia pyrata) so 
abundant on Pyrus lowensis. Locally, however, in 
Madison county it seriously affected the leaves, stems 
and fruit of the wild crab. May was unfavorable for 
the germination and development of the teleutospores. 
Pliragmidum subcorticium (Schrank.) Winter. 
Abundant on the leaves of the cultivated rose, as Madam 
Charles, Frederick Worth, August and September. 
Aecidium Grossularice Schum. 
Not so common as in 1894 on Ribes Grossulariae, R. gra- 
ciie. 
Uredo Caeoma-nitens Schw. 
(C. interstitiale, Schlecht and is supposed to be connected 
with Paccinia Peckiana.) Abundant on Rubus villosus; 
large patches of native blackberry destroyed; seriously 
affecting cultivated blackberry locally. It was also 
observed in Story, Polk, Louisa and Henry counties. 
