FLORA OP THE CASCADES 
153 
Alnus tenuifolia 
Ranunculus eiseni 
Ranunculus oreganus macounii 
Philadelphus lewisii 
Potentilla biennis 
Potentilla fastigiata 
Horkelia fusca 
Drymocallis convallaria 
Argentina anserina concolor 
Lupmus minimus 
Lupinus laxiflorus 
Trifolium longipes 
Phaca pursJiii 
Lathy rus hijugatus sandbergii 
Gentiana affinis 
Gilia humilis 
Collomia linearis 
Phacelia heterophylla 
Lithospermum ruderale 
Pentstemon confertus 
MimuUts nanus 
Ptiloria virgata 
Agoseris glauca 
Chrysothamnus puberulus 
Solidago missouriensis 
Aster eatoni 
Senecio howellii 
Antennaria geyeri 
The species that are more charaeteristic, on the whole, of the 
Upper Sonoran are, 
Sporobolus depauperatus 
Elymus condensatus 
Calochortus macrocarpus 
Eriogonum proliferum 
Eriogonum compositum 
Thelypodium laciniatum 
Kunzia tridentata 
Mentzelia albicaulis 
Gay ophy turn ramosissimum 
Gilia pungens hookeri 
Gilia pharnaceoides 
Phacelia linearis 
Gonanthus parviflorus 
Cryptanthe ambigua 
Mimulus cusickii 
Chrysothamnus viscidiflorus 
Chrysothamnus nauseosus 
Townsendia florifer 
Erigeron poliospermum 
Erigeron linearis 
Aster campestris 
Eriophyllum multiflorum 
Chaenactis douglasii 
Artemisia ludoviciana 
Artemisia tridentata 
Tetrad/ymia canescens 
But the merely numerical comparison of species does not 
give a full idea of the relative importance of the two groups in 
the general make-up of the flora. For example, the above named 
species of Calochortus, Mentzelia, Gilia, Gonanthus, Eriophyl- 
lum, Tetradymia, and a number of others so abundant in the 
Upper Sonoran territory, here form an inconspicuous part of 
the flora, while sagebrush {Artemisia tridentata), which there 
lends color and character to almost the whole landscape, here 
assumes a much less prominent place, and the same is true, to a 
less marked degree, of the species of Chrysothamnus. 
