178 



LAKE SUPERIOR. 



Diervilla trifida Moench. 

 Mitchella repens L. 

 Coreopsis lanceolata L. 



Mulgedium leucophaeum D. C. 



Nabalus racemosus Hook. 

 Lobelia Kalmii L. 



Dianthera americana L. 

 Mimulus ringens L. 

 Castilleja coccinea Spr. 



" septentrionalis Lindl. 



Monarda fistulosa L. 

 Calystegia spithamsea PursTi. 

 Apocynum androsaemifolium L. 



Polygonum articulatum L. 



Shephardia canadensis Nutt. 

 Comandra livida L. 



" umbellata Nutt. 

 Clintonia borealis Raf. 

 Sisyrinchium bermudianum L. 



Truly American types. 



This genus, one of the finest of the 

 Composite, is wanting in Europe. 



Comes near the Mulgedium alpinum of 

 Lapland. 



Entirely wanting in Europe. 



The Lobelioe are not numerous in Eu- 

 rope, being replaced there by the 

 Campanulas and Phyteumata, of 

 which genera the first is scantily 

 represented in America, and the 

 second not all. 



Truly American types. 



Bartsia alpina L. Found upon the 

 highest peaks of the Jura, is the 

 nearest relative to Castilleja cocci- 

 nea in Central Europe. 



Castilleja pallida L., closely allied to 

 C. septentrionalis, occurs on the 

 N. E. confines of Russia. 



We cannot consider this plant as cor- 

 responding to the Apocynum Ve- 

 netum, which belongs to the sea- 

 shores of the Adriatic. These 

 two species differ in form and 

 habitat. 



Of this type of Polygonum there is no 

 analogous form in Europe. 



> Truly American types. 



IV. The few plants of Lake Superior, indicated in the following list, have 

 either a very wide range or are perhaps introduced. 



Corydalis aurea Willd. 



glauca Pursh. 



Capsella Bursa Pastoris D. C. 

 troduced ?) 



(In- 



Corresponds to Corydalis lutea L. 

 Vauxmarcus. The Corydalis are 

 cosmopolites of the middle region. 



Everywhere in Europe. 



