VEGETATION OF THE NORTHERN SHORES. 159 



LAKE SUPERIOR. EUROPE. 



R UBIA CEM. 



Galium trifidum L. Galiuni rotundifolium L. ] Character' 



riibnm.Afc Asperfaodorataand l* 



taunna Z. J flora. 



Eupatorium purpureum Z. Eupatoriura cannabinum i. Common 



in wheat places. 

 Aster corymbosus L. 



" uiacrophyllus L. 



" puniceus Z. 



" laxifolius Nees. 



" ptarmicoides Torr. et Gray. 



" graniinifolius Pursli. Aster alpinus L. Creux du Vent. 



Of these six American species, the last is exclusively northern, and occurs 

 as far as Labrador, to the pine region. It has its analogue in the fine Aster 

 aJpinus of the Creux du Vent, and of the lower Alps. The other specie3, 

 more widely distributed, are represented in Europe by the Aster Amellus and 

 A. salignus, L., which are plants of the plains. 



Erigeron philadelphicum L. Erigeron alpinum L. Creux du Vent. 



" strigosum Muld. 

 Diplopappus umbellatus Torr. S? Gr. 

 Solidago stricta At. Solidago virgaurea L. Var. alpestris, 



" bicolor L. which grows at Chasseron, and 



" thyrsoidea E. Meyer. in the lower Alps. 



" arguta Ait. Var. juncea. 



" -canadensis L. 



" lanceolata L. 



The genera Aster and Solidago are exceedingly numerous in America, where, 

 on the contrary, the Inula and the Hieracium, which abound in Europe, are 

 very rare. The same is the case with the Senecionidse, the Centaurese, and the 

 Carduaceas, which are as few in America as they are numerous in Europe. 



Achilhca MiUefolium L. Achilltea Millefolium L. Var. setacea. 



Var. setacea. Declivities of the lower Alps, in 



the Valais. 



Tanacetum huronense Nutt. Tanacetum vulgare L. Chaux de 



Fonds. 



