1936] 



MAMMALS AND LIFE ZONES OF OREGON 



31 



Polygonum viviparum ana minimum, Veronica alpina, Mimulus al- 

 pinus, Phacelia sericea, Pedicularis contorta, (J-entiana calycosa, 

 Erigeron acris debilis and compositus, Hulsea nana, Arnica parryi, 

 Antennaria media and lanata, Hieratium gracile, Phleum alpinum, 

 and Phegopteris alpestris. 



In the Steens Mountains the vegetation is poorly represented in 

 this zone, and the collecting has been but fragmentary. The follow- 

 ing plants have been collected and noted as representing the zone 

 on the peaks of these mountains : Ranunculus gloverianus, GUia nut- 

 tallii, Aren-aria congesta and aculeata, Alsine ~boreaUs, Oxyria digyna, 

 Veronica alpina, Drdba nemorosa, Spraguea umbellata&mimulticeps, 

 Erigeron compositus trifidus, Achillea alpina, and Phleum alpinum. 



MAMMALS AND BIRDS 



Of mammals there seems to be no species restricted to the zone 

 in the Cascades in Oregon, as the white goat does not come south of 

 the Columbia River. Of breeding birds the rosy finch is perhaps the 

 only characteristic species. In the Steens Mountains no mammals or 

 birds are confined to the Arctic- Alpine. Collecting in the high peaks 

 of the Wallowa and Baker Ranges has not been sufficiently thorough 

 to establish any species of birds or mammals as breeding and occupy- 

 ing in a restricted sense the Arctic-Alpine Zone. 



TABLE 1. Mammals of Oregon, try life zones 



