96 



Rydberg: Phytogeographical notes 



American 



Alsinopsis auadrivalis 

 Alsinopsis Rossii 

 Anemone zephyr a 

 Ranunculus affinis 

 Smelowskia americana 

 Rhodiola integrifolia 

 Leptasea austromontana 



*Potentilla quinquefolia 

 Potentilla nipharga • 

 Vaccinium oreophilum 

 Androsace carinata 

 Androsace albertina 



*Swertia palustris 

 Amarella monantha 

 Amarella plebeia 

 Dasystephana Romanzovii 

 Condrophylla americana 

 Polemonium pulcherrinum 

 Erigeron simplex 

 Erigeron melanocephalus 

 Artemisia saxicola 

 Artemisia spithamaea 



European Asiatic 



A. verna 

 A. verna 



A.narcissiflora A. narcissifiora 

 R. pedatifidus 



S. calycina 



fi?. rosea 



L. bronchialis 

 P. nivea 

 P. nivea 



P. nivea 

 P. nivea 

 V. Myrtillus 



A. Chamaejasme A. Chamaejasme 

 A. Chamaejasme A. Chamaejasme 



S. perennis 

 A. tenella 

 A. Amarella 



D. Froelichii 

 C. prostrata 



E. uniflorus 

 E. uniflorus 

 A. norvegica 



S. perennis 

 A. tenella 

 A. Amarella 



D. frigida 

 C. prostrata 

 P. humile 



E. unijlorus 

 E. uniflorus 



A. borealis 



Many of the endemic American glacial plants — or rather 

 alpine-arctic plants, for most of them [undoubtedly originated 

 after the glacial period — are evidently derived from existing 

 circumpolar glacial plants. Such are: 



American glacial 



Circumpolar glacial 



Deschampsia curtifolia 

 Poa arctica 

 *Festuca saximontana 

 Agropyron biflorum 

 Cerastium Behringianum 

 Draba andina 

 Draba oligosperma 



Some of these arctic-alpine plants had ^ probably the same 



D. caespitosa 

 P. cenisia 

 F. ovina 

 A. caninum 



C. alpinum 



D. glacialis 

 D. glacialis 



