Rvdberg: Phytogeographical notes 



363 



^ Pot en till a V reel a ndii 

 Dodecatheon nniflonim 



Allium simiUisimum 

 Romanzoffia Leibergii 



\Oreohroma minima 

 Aconittim ramosum 

 ^Draha ventrosa 

 \Aiiiscaria micropetala 

 Potentilla wyomingensis 

 " virgtdtata 

 " Nelsonii 



\Wahlhergella Kingii 

 A quilegia scoptdorum 

 Delphininm attenuatum 

 Capnorchis hrachycarpum 

 Lesquerella Wardii 



\Draba sobolifera 

 " brachystylis 



Poa callicroa 



" pudica 



" tricholepis 

 Allium Pikeanum 

 Alsine polygonoides 

 Radicula curvipes 

 Radicula Underwoodii 

 Arabis oblanceolata 



Montana 



Pedicidaris Canbyi 



Idaho 



\Tonestiis laceratus 



Wyoming 



\ Pedicidaris Hallii 

 " lunata 



'\Trifolium scariosum 

 Mertensia viridis 

 Aquilegia larimiensis 

 \Erigeron flabellif alius 

 Arnica tenuis 



Utah 



Gormannia debilis 

 Edwinia macrocalyx 

 Potentilla paucijuga 

 ^Synthyris pinnatifida 

 Castilleja viscida 

 " parvida 



Colorado 



^Potentilla tenerrima 

 t " minutifolia 

 ^Trifolium bracteolatum 

 '\Trifolium attenuatum 

 ^Aragallus Hallii 

 '\Polemonium Grayanum 

 Besseya reflexa 



Chaenactis peduncularia 



One of the strangest distributions is that of Viola biflora, a 

 European species, which has been collected in America only at a 

 few places in Colorado and in Alaska. 



Summary 

 The subalpine flora contains over eight hundred species. Of 

 these about 30 per cent, are also found above the timberline and 



