410 OHIO EXPERIMENT STATION: BULLETIN 214 
Figs. 59-60, Figure 59 on the left shows roots of shepherd’s purse. Figure 60 on the 
right, roots of hedge mustard. Both are attacked byclub-root. Both after Halsted. Bul- 
letin 98, N. J. Exp. Sta. 
Downy Mildew. The downy mildew fungus of crucifers (Peronospora para- 
sitica (Pers. (De By) is so universal on plants of the mustard family that it may 
be usually expected. The weedy species may accordingly keep up the supply of 
the parasite which attacks cabbage and cauliflower as wellas others of the 
family. 
Wilt. It is very zecessary that search be made as to the survival of the 
fusarium of cabbage wilt on mustard weeds. 
OAK 
Anthracnose. The oak leaves are attacked by the same anthracnose fungus 
as attacks the leaves in young shoots of sycamore and maple, but this is not so 
prevalent upon oaks in Ohio as upon the sycamore. 
