406 Wisconsin Academy of Sciences , Arts, and Letters. 
Uromyces hyperici-frondosi (Schw.) Arth. 
Aecia and uredinia on Hypericum canadense . Wild Rose. 
The covered leaf rust that was recorded in the provisional list 
under the name Puccinia perminuta Arth. as occurring on Cinna 
arundinacea has been collected on Cinna latifolia also at Hixton. 
This is now thought to belong to the species bearing aecia on 
Impatiens which has been named Puccinia impatientis by Arthur, 
P. impatienti-elymi Arth. by Klebahn and P. elymi-impatientis by 
the writer. 
Puccinia graminis Pers. 
Telia on Agropyron tenerum. Barron (L. S. Cheney). 
Puccinia menthae Pers. var. am&ricana Burr. 
On Blephilia hirsuta. Wonewoc. 
In the summer of 1917, while collecting along the shore of 
Lake Michigan at Two Rivers, fasciation of certain branches of 
Juniperus horizontalis was observed such as might be produced by 
Gymnosporangium but quite different from the galls caused by 
G. corniculans Kern which occurs upon this host species. Upon 
search through the adjacent woods a Roestelia was found upon 
leaves of Amelanchier having a slender peridium like that of the 
aecial stage of Gymnosporangium juvenescens Kern, a species 
that occurs on Juniperus virgimana in western Wisconsin but 
which is not known to occur in the eastern part of the state. In 
May, 1918, a trip was made to the locality and telia were secured 
with which plants of Amelanchier canadensis were infected in the 
greenhouse the infections resulting in the same type of aecia that 
had been found the previous summer in the field. In July the lo¬ 
cality was again visited and Roestelia on Amelanchier was se¬ 
cured, and the trip extended along the lake shore northward which 
showed that the rust exists on the beaches with Roestelia in the 
woods as far north as Bailey’s Harbor where the trip ended. Study 
of the aecia and telia brought the conclusion that the rust is Gym¬ 
nosporangium juvenescens Kern and on submitting specimens to 
Dr. Kern he concurred in the opinion. As this is not known to ac- 
cur on Juniperus virginiana in eastern Wisconsin, the suspicion 
arises that there is a race specialized to Juniperus horizontalis. 
Coleosporium viburni Arth. Telia on Viburnum pubescens . 
Keshena (R. H. Denniston). [Also at Mosinee.] 
