Southeastern Washington and Adjacent Idaho. 
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 
Hookera douglasti 
Iris missouriensis 
Linum lewisti 
Lithospermum ruderale 
Lupinus leucophyllus 
Lupinus wyethii 
Mertensia oblongifolia 
Olsynium grandiflorum 
Orthocarpus tenuifolius 
Pentstemon confertus 
Phlox speciosa 
Poa ampla 
Senecio atriapiculatus 
Sidalcea oregana 
Silene douglasti multicaulis 
Solidago missouriensis 
Synthyris rubra 
Trillium petiolatum 
Vaccinium caespitosum 
Valeriana edulis 
Viola adunca 
Wyethia amplexicaulis 
Zygadenus venenosus 
43 
Heuchera glabella 
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 
43 
