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THE AMERICAN BOTANIST 



sand spurge (Croton Tcxenis), the showy giha (Gilia loiigi- 

 flora), the green milk-weed, three members of the Caper 

 family, (Cleome sernilata^ Crist at ella Jamesn, and Polanisia 

 trachysperma) . Legumes are frequent; Lupimis piisilhis, 

 Petalostemon villosa and the narrow^ leaved Psoraleas are per- 

 haps the most numerous. The tw^o most general composites are 

 the wormwood (Artemisia dracunciiloidcs) and the viscid aster 

 {Machaeranthera sessiliflora) . In the shade of the willow 

 thickets are to be found a number of additional herbs among 

 which may be mentioned the western night-shade (Solanuin 

 interior), wallflower {Erysimum cheiranthoides) and AUionia 

 nyctaginea. The borders of the brooks are quite gay with 

 flowers. Among the brightest are the monkey flower (Mimtliis 

 Geyeri), Thoroughwort (Etipatonun Bruneri), St. John's wort 

 {Hypericum majus) , the willow herbs {Epilohiuin lineare and 

 E. adenocaidon) , the touch-me-not {Impaticns biflora), the 

 Marsh-elder {Iva axillaris), the bur-marigolds {Bidcns glau- 

 cescens and B. tricopermum teiiuilobata) and perhaps the gay- 

 est of all Gerardia paupercula. 



