FLORA OF THE YELLOWSTONE NATIONAL rAllK. 21 



been observed out of. hot spring soil. Spraguea umbellata, 

 Torr, finds a congenial home on the bare geyserite, and in the 

 same case though more local are Ajjlopappus uniflorus, Torr 

 and Gray ; Mimulus namus, Hook and Arn.; Gastilleia minor, 

 Gray ; Orthocarpus liUeus, Nutt., and GJyceria airoides, Thurb. 



Spraguea umhellata, Torr. 



* Chrysopsis villosa, Nutt. 



^ Aplopappus uniflorus, Torr and Gray. 

 Ghasnactis Douglasii, Hook and Arn. 



* Gnaphaliurtx Sprengelii, Hook and Arn. 

 Senecio canus, Hook. 

 Arctostaphylos Uva-ursi, Spreng. 



"^ Mimulus nanus, Hook and Arn. 



* Gastilleia minor, Gray. 

 "^Orthocarpus luteus, Nutt. 



*Lycopus Virginicus, L., var. pauciflorus, Benth. 

 "^Brunella vulgaris, L. 



Chenopodium glaucicm, L. 



Chenopodium capitatum, Wats. 



Monolepis chenopodioides, Moq. 



* Salicornia herbacea, L. 

 ^Eriogonum flavum, Nutt. 

 ^Bumex maritimus, L. 



Euphorbia serpylUfolia, Pers. 

 *Juncus tenuis, Willd., var. congestus, Englm. 

 ^Piuppia maritima, L. 



Potamogeton pectinatus, L. 



* Trilochin mayntinium, L. 

 Eleocharis palustris, R. Br. 

 Eleocharis olivacea, Torr. 



* Panicum dichotomum, L., var. ijuhescens. 

 ^Spartina gracilis, Trin. 

 *Glyceria airoides, Thurb. 

 Juniperus communis, L., var. alpina, Gaud. 



* Botrychium ternatiim, Swartz, var. australe, Eaton. 

 Pteris aquilina, L. 



