102 



Rydberg: Phytogeographical notes 



Rockies; only a few of these extend far enough south to reach the 

 boundary of the United States. In other words, only a few of 

 them reach Montana and still fewer northern Idaho. 



Salix alexensis 

 Salix arbusculoides 

 Salix Barrattiana 

 Salix Drummondiana 

 *Tofieldia coccinea 

 Micranthes foliolosa 

 Erigeron grandiflorns 

 Erigeron lanatus 

 Erigeron unalaschensis 

 Antennaria alpina 



A rtemisia Richard soniana 

 Artemisia arctica 



* Achillea borealis 



* Achillea multiflora 

 *Senecio lugens 



Potentilla emarginata 

 Amarella arctophila 

 Amarella propinqua 

 Mertensia Drummondii 

 Castilleja pallida 



Antennaria monocephala 



Some of these arctic plants have a circumpolar distribution, as 

 the following: 



Juncus higlumis 

 Juncoides arcticum 

 Juncoides hyperboreum 

 Juncoides arcuatum 

 Androsace septentrionalis 

 Saxifraga rivularis 

 Draba nivalis 

 Draba alpina 



Muscaria caespitosa 

 Micranthes nivalis 

 Cardamine bellidifolia 

 Mairania alpina 

 Cassiope tetragona 

 Pedicularis lanata 

 Pedicularis Oederi 

 Pedicularis flammea 



The following are Asiatic-American arctic plants extending into 

 the Canadian Rockies: 



Cheirinia Pallasii Potentilla villosa 



Potentilla uniflora Campanula lasiocarpa 



Subalpine Plants 



Besides these, there are many of the subalpine plants which 

 occasionally are found above timber line. If the sedges, which I 

 have not yet recorded, are excepted, the list contains 80 such 

 species. There is no need of giving the list in this connection. If 

 I should discuss in a subsequent paper the subalpine region, such 

 a list would there find its place. 



* Mostly subarctic-subalpine. 



