134 AMERICAN MIDLAND NATURALIST 



the book especially suited for high school pupils and beginners 

 in botany in college. The inclusion of the cultivated plants is a 

 very welcome addition. From the parks and gardens these plants 

 are always falling into the hands of the student and the dis- 

 appointment which arises when no trace can be found in the older 

 manuals is familiar to every teacher. This scheme which recog- 

 nizes the wild and cultivated forms in the same work is commenda- 

 able not only because it facilitates determination but also because 

 it may throw a new light on relationships. 



F. D. K. 



Purdue Univ. 



Viola arvensis Murr. in Northern Indiana. 



BY J. A. NIEUWLAND. 



It is not all certain that the plant generally reported for 

 the midland as Viola Rafinesquii Greene, is really that plant 

 in all cases. I have noted a number of such in the U. S. National 

 Herbarium as being really the European Viola arvensis Murr.; 

 a plant long confused with the other. I have never found V. 

 Rafinesquii in the middle west, but I have found the other plant, 

 introduced in several rather widely distant places in St. Joseph 

 County, growing in waste places and dry sandy fields left un- 

 cultivated for some years. In two places particularly at Webster's 

 Crossing and at the Four Mile Bridge. Viola arvensis not only 

 maintains itself well, but is spreading considerably. This plant 

 has been omitted from Britton's Floras, persumably as not occur- 

 ing in the United States east of the Mississippi River and pre- 

 suppossing possibly and mistakenly that the plant reported in 

 our region is Viola Rafinesquii. Viola tricolor Linn., the small 

 flowered plant from which our numerous cultivated forms are 

 derived, has also escaped at Notre Dame, but is not as well able 

 to maintain itself in waste places. 



Pages 64-78, published April 1,1813. 



Page 62 should be 64 and 76 is 78; each page numlier between should 

 read two numl)crs higher. 



