XIV. EXTENSION OF PLANT RANGES IN THE 

 UPPER MINNESOTA VALLEY. 



L. R. MOVER. 



The following notes refer to plants that have been collected 

 in the upper Minnesota valley since the publication of Professor 

 MacMillan's Metaspermce of the Minnesota Valley. Duplicates 

 have been deposited in the Herbarium at the State University. 



Thlaspi arvense L. 



This old world crucifer has become well established in the 

 railroad yards at Montevideo and is spreading rapidly. 



Conringia orientalis (L,.} DUMORT. 



This plant, first collected in wheat fields in Chippewa County 

 in 1894, is spreading very rapidly and seems likely to become 

 one of the worst " mustards " with which the farmer has to con- 

 tend. 



Sisymbrium altissimum L. 



This plant, too, is spreading very rapidly along the railroad 

 tracks at Montevideo, and seems likely to become a very trouble- 

 some weed. 



Peucedanum nudicaule (PURSH) NUTT. 



This plant is found to be quite plentiful in the upper Minne- 

 sota valley on thin gravelly land near ledges of igneous rock. 

 It is one of the earliest spring flowers. 



Potentilla hippiana LEHM. 



This western Potentilla is occasionally found on ledges of 

 gneiss rock near Montevideo. 



Helianthus annuus L. 



Among the recent arrivals at Montevideo, an immigrant from 

 the West, is the annual sunflower. It is traveling along the 

 railroads. 



