meadows near upper treeline. A photgraph of the habitat at 

 Neihart (008) is included in Section V., p. 71. 



1. ASSOCIATED VEGETATION: Cirsium longistylum populations 

 occur in both disturbed and undisturbed habitats. The 

 disturbed habitats are typically roadsides, trails, 

 meadows and clearings. Species associated with the 

 disturbed sites include: 



Artemisia spp. (sagebrushes) 



Bromus inermis (smooth brome) 



Phleum pratense (timothy) 



Poa pratensis (Kentucky bluegrass) 



Cirsium arvense (Canada thistle) 



Taraxacum officinale (common dandelion) 



The undisturbed habitats are native grasslands and 

 grassy openings in open forests. Associated species 

 include: 



Juniperus communis (common juniper) 



Pinus contorta (lodgepole pine) 



Pinus ponderosa (ponderosa pine) 



Pseudotsuga menziesii (Douglas fir) 



Potentilla fruticosa (shrubby cinguefoil) 



Achillea millefolium (yarrow) 



Agoseris glauca (pale agoseris) 



Allium qeyeri (Geyer's onion) 



Androsace septentrional is (northern fairy-candelabra) 



Anemone multif ida (cliff anemone) 



Antennaria microphvlla (rosy pussy-toes) 



Antennaria racemosa (raceme pussy-toes) 



Arenaria conqesta (ballhead sandwort) 



Aster occidenta lis (western aster) 



Astragalus alpinus (alpine milk-vetch) 



Astragalus miser (weedy milk-vetch) 



Campanula rotundifolia (lady 's-thimble) 



Cerastium arvense (field chickweed) 



Claytonia lanceolata var. flava (yellow springbeauty) 



Delphinium bicolor (little larkspur) 



Equisetum arvense (field horsetail) 



Festuca idahoensis (Idaho fescue) 



Fraqaria vesca (woods strawberry) 



Fragaria virginiana (Virginia strawberry) 



Frasera speciosa (giant frasera) 



Galium boreale (northern bedstraw) 



Gentiana calycosa (explorer's gentian) 



Geranium richardsonii (white geranium) 



Geranium viscosissimum (sticky geranium) 



Geum triflorum (old man's whiskers) 



Hedysarum sulphurescens (yellow hedysarum) 



Heracleum sphondvlium (cow-parsnip) 



