FLORA OF THE YELLOWSTONE NATIONAL PARK. 17 



*Smelowskia calycina, C. A. Meyer. 



* Thlaspi alpestre, L. 

 *Silene acaulis, L. 



*Arenaria verna, L., var. hirta, Wats. 

 *Arenaria biflora, var. obtusa, Wats. 

 *Arenaria stricta, Wats. 



Sagina Linnsei, Presl. 



Calandrinia pygmsea, Gray. 



Trifolium Parryi, Gray. 



* Astragalus alpinus, L. 

 *Dryas octopetala, L. 



Ivesia Gordoni, Torr and Gray. 

 *Sibbaldia procumbens, L. 



Saxifraga Jamesii, Torr. 

 *Saxifraga oppositifolia, L. 

 * Saxifraga c&spitosa, Jj. 



* Saxifraga rivularis, L. 



* Saxifraga nivalis, L. 



* Saxifraga punctata, L. 

 Sedum rhodanthum, Gray. 



*J$pilobium latifolium, L. 



Aplopappus Lyalliij Gray. 

 *Erigeron uniflorus, L. 



Erigeron ursinus, Eaton. 



Erigeron radicatus, Hook. 

 *Antennaria alpina, Gaertn. 



Artemisia scopulorum, Gray. 



Senecio Fremonti, Torr and Gray. 



Hulsea nana, Gray. 



* Taraxacum officinale, Weber, var. scopulorum, Gray. 

 Bryanthus empetriformis, Gray. 



Douglasia montana, Gray. 



Polemonium confertum, Gray. 



*Polemonium humile, Willd., var. pulchellum, Gray. 

 *0mphalodes nana, Gray, var. aretioides, Gray. 



Mertensia alpina, Don. 



* Veronica alpina, L. 



* Gastilleia pallida , Kunth, var. scpientrionalis, Gray. 

 Penstemon Menziesii, Hook. 



