Southeastern Washington and Adjacent Idaho. 



43 



Calochortus macrocarpus 

 Carum gairdneri 

 Carex geyeri 

 Castilleja lutescens 

 Circium foliosum 

 Circium palousense 

 Claytonia linearis 

 Clematis hirsutissima 

 Cogswellia triternata 

 Collinsia tenella 

 Comandra pallida 

 Deschampsia calycina 

 Drymocallis convallaria 

 Elymus glaucus 

 Epilobium adenocaulon 

 Epilobium angustifolium 

 Epilobium paniculatum 

 Erigeron corymbosus 

 Fritillaria pudica 

 Galium boreale 

 Gaillardia aristata 

 Gentiana oregana 

 Gilia gracilis 

 Heuchera glabella 



Hookera douglasii 

 Iris missouriensis 

 Linum lewisii 

 Lithospermum ruderale 

 Lupinus leucophyllus^ 

 Lupinus wyethii 

 Mertensia oblongifolia 

 Olsynium grandiflorum 

 Ofthocarpus tenuifolius 

 Pentstemon confertus 

 Phlox speciosa 

 Poa ampla 



Senecio atriapiculatus 

 Sidalcea oregana 

 Silene douglasii multicaulis 

 Solidago missouriensis 

 Synthyris rubra 

 Trillium petiolatum 

 V actinium caespitosum 

 Valeriana edulis 

 Viola adunca 

 Wyethia ample 'xicaulis 

 Zygadenus venenosus 



The prairies of eastern Washington, because of their grassy 

 verdure and sod-like appearance in spring and early summer, gave 

 rise to the term Palouse (Fr. pelouse, a land clothed with a short, 

 thick growth of herbage), a name applied by the Jesuit mis- 

 sionaries. However, as the dry summer season progresses the 

 prairies become quite brown and dry, except on the steeper north 

 hillsides and in the moist valleys. The south and southwest slopes 

 present a vegetational cover with a decidedly more xerophytic 

 stamp than the latter situations. Indeed, this is so pronounced 

 that rather careful and extensive investigations of the different 

 habitat conditions were made. Although a part of these results 



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