Rydberg: Phytogeographical notes 



353 



Juncus Regelii 



" nevadensis 

 Cytherea occiden talis 

 \Eriogontim pyrolaefolium 

 Naiocrene parvifolia 

 ^A renaria salmonensis 

 Anemone Drummondii 

 Pulsatilla occidentalis 

 Ranunculus alismellus 

 A qiiilegia formosa 

 Thlaspi calijornicum 



Dentaria rupicola 

 Draba eurocarpa 

 Pectianthia Bre-weri 

 Heuchera glabra 

 Potentilla flabellifolia 

 Epilobium oregonense 

 " liUeum 



\Dasystephana calycosa 

 Romanzoffia sitchensis 

 Adenostegia ramosa 



^Pedicularis contorta 



Of these Eriogonum pyrolaefolium, Draba eurocarpa, Potentilla 

 flabellifolia and Linnaea longiflora are limited to the Bitter Root- 

 Selkirk region, while Pinus albicaidis and Stipa oregonensis extend 

 south to Wyoming, and Vaccinium occidentale to northern Utah. 



5. Immigrants from Alaska and the arctic coast 



The following are mostly arctic, a few being subarctic plants 

 from near the arctic timber line, which extend farther south in the 

 Rockies and are there found in the subalpine as well as the alpine 

 zone. Of these Silene repens, Micranthes Lyallii, Dasystephana 

 glauca and Euphrasia mollis extend as far south as Montana; the 

 others are limited to the Canadian Rockies. 



^Salix myrtillifolia 

 t " alaxensis 

 t ' ' Barrattiana 

 t ' ' Seemanii 



" Drummondiana 



Carex venustula 

 " physocarpa 

 " MacCallae 



Silene repens 

 ^Anemone Richardsonii 



Shrubs 



Salix arbiisctdoides ' 

 " desertorum 

 " saskatchewana 

 ]A retails erythrocarpa 



Herbs 



Aconitum delphinifolium 

 Sophia sophioides 

 Pilosella Richardsoniana 

 Arabis ambigua 

 Micranthes Lyallii 



