232 IOWA ACADEMY OF SCIENCE Vol. XXVI, 191S 



the nearest barberry bush. The bushes in northwest corner ol 

 the pasture were some 300 feet from the nearest barberry bush 

 All of the plants occur on the hillside. The larger ones are on the 

 north slope. Several ravines run through this pasture. The plants 

 in the Pearce hedge had few seeds. Many of the plants had been 

 cut back. Where the plants had been cut back a large number of 

 young shoots have appeared from suckers. 



As to the rust an abundance was found on the old stems of Hordeum 

 jubatum, Agrostis alba, and some on timothy, nothing on orchard grass. 

 No recent pustules of P. graminis were seen on volunteer oats or on green 

 stems of Hordeum jubatum. The rust pustules were found on Phleum 

 pratense but no P. graminis was seen on volunteer oats and very little of 

 P. coronata. Nothing (P. graminis or P. coronata) , was present on Bromus' 

 inermis. There was an abundance of uredo spores on blue" grass, but noth- 

 ing, however, on orchard grass. There was a buckthorn hedge west of the 

 Pearce place. There was some P. simplex near the Chicago & North 

 Western Railway depot in Clinton, but no P. graminis on barley. 



This trip was made late in November, which accounts for the scarcity 

 )f uredo pustules on the wild grasses and oats. The volunteer oats had 

 been killed nearly to the ground. 



Wild Barberry at Kcllcv. — During the winter in a conversation 

 with ]\Ir. P. L. Petersen, I learned that a considerable number of 

 escaped barberries occurred on his place two miles east of Kelley 

 on Walnut creek. The original hedge was planted by Mr. Giddings 

 who sold the farm to T^Ir. W. P. George. Mr. Raymond F'ogelman, 

 who a little later investigated the area for the federal government, 

 found and placarded the area where the escaped barberries occurred. 

 I visited the place with Dr. E. D. Ball and ^Ir. Ness on May 22, 

 1919. The wild and cultivated barberries have been in the region 

 for at least twenty years, according to Mr. Weeks. I counted 300 

 clumps, varying from a few years standing to clumps at least fifteen 

 or eighteen years old. One large clump, six feet across, had eighty 

 stalks and there were others as large. Many of the plants were full 

 of bloom. There seems to be at least some barberry not referable to 

 the true B. vulgaris. Tn leaf character it fits the B. canadensis, but 

 the flowers are like B. vulgaris. The leaves resemble the leaves of 

 one of the varieties of B. vulgaris in our herbarium. The plants, as 

 a whole, were healthy looking, except on some of the steep banks 

 where they sutTered somewhat from the drought of last year. The 

 escaped barberry occurred on the east and west sides of the creek, 

 on the farm owned by Messrs. Petersen and Finch, altogether for 

 about one-half mile along the wooded creek, in the valley, as well as 

 on the hillside. In some places it was much more abundant than in 

 others. They were found on the banks, as well as on the slightly 



