XXXII. A CONTRIBUTION TO THE KNOWLEDGE 



OF THE FLORA OF THE RED RIVER VALLEY 



IN MINNESOTA. 



W. A. WHEELER. 



During August, 1900, collections were made by the Botanical 

 Survey in the valley of the Red River of the North. Professor 

 Conway MacMillan, A. S. Skinner andC. J. Hibbard explored 

 the region around Crookston through Polk and Red Lake 

 counties and Professor C. A. Ballard visited Kittson, Marshall 

 and Otter Tail counties. Professor MacMillan's party visited 

 Crookston, Shirley, Holmes station and the region around 

 Maple lake near Dugdale and Mentor in Polk county and 

 Thief River Falls, Red lake Falls, St. Hilaire, Wylie and Ives 

 in Red Lake county. Professor Ballard visited St. Vincent, 

 Humboldt, Northcote, Hallock and Kennedy in Kittson county, 

 Marshall in Warren county and Fergus Falls in Otter Tail county. 



The collections made at these stations, scattered as they are 

 through the Minnesota part of the Red River valley give a good 

 representation of the late summer flora of this region. 



The following plants were gathered of which there have been 

 no definite authentic collections previously reported from 

 Minnesota. 



Puccincllia airoides (NuTT.) WATS. & COULT. 



Elynius macouni VASEY. 



Scirpus campestris BRITTON. 



Juncus dud ley i WIEGAND. 



Rumex occidentalis S. WATS. 



Chenopodinm ambrosioides L. 



Atriplcx patula L. 



Potentilla ejfusa DOUGL. 



Chamcerhodos erecta (L.) BUNGE. 



Lappula americana (A. GRAY) RYDBERG. 



Chrysopsis hispida (HooK.) NUTT. 



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