Table 8.— Classification of the more abundant species according to 

 their sensitivity to trannpling' 



VERY RESISTANT 



Carex geyeri (elk sedge) 

 Festuca scabrella (rough fescue) 

 Arenaria congesta (capitate sandwort) 



Penstemon confertus/P. procerus (yellow/small-flowered beardtongue) 



Xerophyllum tenax (beargrass) 



mosses 



RESISTANT 

 Amelanchier ainifolia (western serviceberry) 

 Arctostaphylos uva-ursi (kinnlklnnick) 

 Berberis repens (creeping Oregongrape) 

 Linnaea boreal is (twinf lower) 

 Rosa acicularis (prickly rose) 

 Rosa gymnocarpa (baldhip rose) 

 Carex concinnoides (northwest sedge) 



Antennaria microphylla/A. umbrinella (rosy/umber pussy-toes) 



Antennaria racemosa (raceme pussy-toes) 



Chimaphila umbellata (prince's-pine) 



Chrysopsis villosa (hairy golden-aster) 



Solidago missouriensis (Missouri goldenrod) 



Viola orbiculata (round-leaved violet) 



NEITHER RESISTANT NOR SENSITIVE 

 Pachistima myrsinites (mountain-lover) 

 Rubus parviflorus (thimbleberry) 

 Symphoricarpos albus (snowberry) 

 Vaccinium scoparium (grouse whortleberry) 

 Bromus vulgaris (Columbia brome) 

 Calamagrostis rubescens (pine grass) 

 Achillea millefolium (common yarrow) 

 Aster foliaceus (leafy aster) 

 Fragaria virginiana (blueleaf strawberry) 

 Potentilla gracilis (slender cinquefoll) 

 tree seedlings 

 lichens 



SENSITIVE 



Spiraea betulifolia (shiny-leaf splrea) 



Vaccinium caespitosum (dwarf huckleberry) 



Vaccinium globulare (globe huckleberry) 



Arnica cordifolia/A. latifolia (heartleaf/mountain arnica) 



Aster conspicuus (showy aster) 



Fragaria vesca (woods strawberry) 



Galium boreale (northern bedstraw) 



Geranium viscosissimum (sticky purple geranium) 



Hieracium albiflorum (white-flowered hawkweed) 



Lupinus sericeus (silky lupine) 



Smilacina stellata (starry false Solomon's seal) 



VERY SENSITIVE 

 Adenocaulon bicolor (pathfinder) 

 Clintonia uniflora (queencup beadllly) 

 Disporum trachycarpum (Sierra ferry-bell) 

 Epilobium angustifolium (fireweed) 

 Galium triflorum (fragrant bedstraw) 

 Hedysarum occidentale (western sweetvetch) 

 Lupinus argenteus (silvery lupine) 

 Melampyrum lineare (narrow-leaved cow-wheat) 

 Osmorhiza chilensis (mountain sweet-root) 

 Thalictrum occidentale (western meadowrue) 

 Viola adunca (early blue violet) 



'Classification guidelines were: very resistant if relative cover was greater tfian 

 30 percent after 400 passes; resistant if relative cover was greater ttian 30 percent 

 after 100 passes and greater than 10 percent after 400 passes; sensitive if relative 

 cover was between 1 and 20 percent after 100 passes; and very sensitive if thie 

 plant was usually eliminated after 100 passes. Wittiin each class plants are ar- 

 ranged from shrubs and subshrubs to graminolds, forbs, and miscellaneous. 



27 



