Rosendahl: FLORA OF SOUTHEASTERN MINNESOTA. 259 



They were collected on the top and north slope of a ridge 

 running east and west, less than half a mile long, and which 

 rolls off southwestwardly into the prairie. 



Pyrola secunda and Chimaphila umbellata occur infrequently 

 on some of the wooded ridges. The other plants enumerated, 

 with the exceptions noted, were found only at this place. 



Sibbaldiopsis tridentata, growing on exposed rocks at the 

 northwest extremity of the ridge, is of very infrequent occur- 

 rence in the state outside the Lake Superior region. 



A few of the species collected are of particular interest, as no 

 previous authentic collection of them has been reported from 

 the state before. They are : 



Homalocenchrus lenticularis , Viola indivisa, 



Melica diffusa, Viola mesochora, 



Poa ivoljii) Viola achlydophylla. 

 Anychia canadensis, 



The following have been reported, but are not represented 

 by any previous collection from Minnesota in the University 

 Herbarium : 



Carcx cephalopkora, Carex muhlenbergii^ 



Parthenium integrifolium. 



CATALOGUE OF ADDITIONAL SPECIES COLLECTED. 



The following catalogue of plants is in the nature of an addi- 

 tion to Mr. Wheeler's report for the region, and out of the en- 

 tire collection made cites only such species as were not given in 

 his report : 



All the collections with one exception were made by the 

 writer and in the region specified. 



Prof. E. L. Greene, of the Catholic University of America, 

 determined the violets. 



>Mr. C. F. Wheeler, of the U. S. Dept. of Agric., determined 

 o species of Carex. 

 Mr. H. L. Lyon, of the University of Minnesota, determined 

 the Pteridophytes, and Mr. W. A. Wheeler, of the University 

 of Minnesota, School of Agriculture, determined all the grasses. 

 The other determinations were made by the collector. The 

 specimens have been inserted in the University Herbarium. 



