420 XEW JERSEY AGRICULTURAL COLLEGE 



their leaves badly infested. This fungus works. upon the leaf stalk ia 

 particular and causes it to twist into all sorts of fantastic shapes. 



Wild roses, in some places, were so badly infested with a rust 

 {Phragmidium subcorticum) that they were practically destroyed. 

 This fungus, of an orange color, attacks the canes, as well as the 

 leaves, and distorts and dwarfs them. This fungus was found in 

 patches upon the untilled hillsides, while in other places the rose- 

 bushes were free from it and healthy. 



Among the herbs infested with a rust may be mentioned the sweet 

 cicely {Osmorrhiza hrevistyles) , which is usually more or less affected 

 with the Puccinia Pimpinillce Strauss. 



Mildews. — The Peronospora Ficaricv Tul., upon Ranunculus recur- 

 vatus, was quite abundant early in the season. Other hosts for same 

 mildew were Ranunculus abortivus and R. repens, but it was most 

 conspicuous upon the first-named crowfoot. 



A chickweed ( Cerastium longipedunculatum ) was abundant in that 

 region and badly infested with Peronospora alsinearum Casp. The 

 mildewed plant usually remained small and produc-ed no flowers. In 

 some patches all the plants were diseased and dwarfed. 



The tall figw'ort (Scropliulari-a Mnrijlandica L.) showed the most 

 conspicuous mildew, its large leaves being much discolored and some- 

 times distorted by the Peronospora sordida Berk. This is one of the 

 mildews that produces a decidedly violet coating upon the infested 

 part of the leaf, and, also, the border of the mildewed spot has a dis- 

 tinct purple border, as seen from the upper side. Some of the young 

 plants were so badly infested as to Ije ruined. 



The galiums were badly mildewed with Peronospora calotheca 

 DeBy. It was most common upon the upright Galium Sp., where 

 the whole plant v,'as dwarfed and rendered of a pale color. 



]\Iany other fungi were met with, of wdiich only one may be added 

 here, namely, a smut upon Actea or Baneberry. This Urocystis in- 

 fests the whole plant, from the base of the stem to the divisions of 

 the large, compound leaf. 



A large number of specimens of these various parasite fungi were 

 secured for further studv and distribution. 



