226 IOWA ACADEMY OF SCIENCE Vol. XXVI, 1919 



the grasses on May 12, 1919. In this connection it may be said that P. 

 coronata was common on orchard grass in Manchester in October, 1918, and 

 yet there was no indication of uredo spores of this rust on orchard grass on 

 May 12, 1919. The writer also made observations on Hordeum jubatum, 

 Agrostis alba, Agropyron repens and winter rye at LaMont in Butler 

 county, but there were no indications of uredo spores of P. graminis on these 

 grasses. Hordeum jubatum, squirrel tail grass, was observed at Ames with 

 a heavy infection of P. graminis last fall, but up to the writing of this 

 paragraph on May 22d has shown no indication of uredo spores. On May 

 18th there was no indication of P. graminis on winter rye. 



The large wild barberry plants here were perhaps twenty-five 

 years old. Several clumps were scattered through the woods and 

 along the roadside. 



The barberry had escaped near Montpelier before 1900 according 

 to Mr. W. D. Barnes, Ferd Reppert and A. A. Miller. On page 

 202 of the Flora of Scott and Muscatine counties-'^ published in 1900 

 they state : "In woods west of Montpelier." This is the only 

 locality given by these authors. If other had been known they 

 wotild have been mentioned by Mr. Reppert who was a keen 

 observer. 



Warren Upham in his Catalogue of the Flora of Minnesota-* 

 published in 1884 reports that Leiberg found barberry spontaneous 

 in old fields at Mankato, Minnesota. It is likely that Leiberg fotmd 

 the plant several years previously, making barberry spontaneous .in 

 the late seventies or early eighties. 



At Le Claire we visited the J. B. Johnson hedge two and one-half 

 miles from Le Claire. According to Mr. Johnson the hedge is forty- 

 six years old, and is seventy rods long. Formerly it was trimmed 

 back, but now little is done. It was not dug out or removed because 

 his mother said the father planted it, and there was much sentiment 

 connected with it. The house stands on a hill, a private road leads 

 from the highway west and then curves slightly to the north, leaving 

 a bank to the south. On the bank I found some black oak (Q. vehi- 

 tina) and some red cedar, a single red cedar on the top of the hill 

 south side and several red cedars on the north side of the road 

 on the slope; between the hill and the highway on the north side are 

 several wild bushes and on the bank below the oaks I found between 

 fifty and sixty wild plants, one to five years old. The man who 

 originally planted this hedge must have had considerable horticultural 

 interest. He set out some Rhamnus cathartica, Syringa vulgaris, 

 Spira-a 'fliiinbcrgii and back of it is an orchard overrun with Rhus 

 occidentalis, R. viUosns and weeds. I did not, however, find any 



a.tProc. Davenport Acad. Sci. 1900: 2D2. 



24Geol. and Natural History Survey of Minn., Pt. VI. Annual Report of 

 Progress. 



