RARE ALPINE PLANTS 



295 



Cantons Valais and Grisons (Graubunden) are 

 certainly much richer in Alpine species than any 

 other district on the north side of the main Alpine 

 chain. 



Among the rarities confined to the Valais are : — 



Anemone halleri, All. 

 Silene vallesia, Linn. 

 Oxytropis foetida, D, C. 

 Potentilla multifida, Linn. 

 Trifolium saxatile, All. 



Saxifraga diapensioides. 



Bell. 

 Valeriana celtica, Linn. 

 Senecio uniflorus, All. 



In the Engadine, and elsewhere in the Grisons, the 

 following species are found : — 



Papaver nudicaule, var. 



rhceticum, Leresche. 

 Dianthus glacialis, Hanke. 

 Sempervivum wulfeni, 



Hopp. 



Senecio carniolicus, Will. 

 Valeriana supina, Linn. 

 Pedicularis jacquini, 

 Koch. 



which are either unknown elsewhere in Switzerland 

 or only occur in the southern Canton of Tessin. 



Eare species, common to both the Valais and 

 Grisons, but practically confined to these Cantons, are, 

 among others : — 



Arabis halleri, Linn. 

 Sempervivum funcMi, 



Braun. 

 Pedicularis incarnata, 



Jacq. 



Potentilla nivea, Linn. 

 Phyteuma humile, 

 Schleich. 



