354 PHANEROGAMOUS PLANTS. 



27. HELIANTHELLA, Torr. & Gray. 



1. HELIANTHELLA LANCEOLATA, ToTT. & Or ay. 



Hab. Interior of Oregon or Washington Territory, at Fort Oka- 

 nagan and on the Kooskooskee, where it was also collected by the 

 Kev. Mr. Spalding. 



28. COREOPSIS, Linn, 

 1. Coreopsis Atkinsoniana, Dougl. 

 Hab. Oregon ; the station not given. — Root evidently biennial. 



29. BIDENS, Tourn. 



1. Bidens ceruna, Linn., var. elata, Torr. & Gray. 



2. Bidens frondosa, Linn. 



3. Bidens bipinnata, Linn. ? 



Hab. California: the latter at San Francisco (specimen too poor 

 for determination) ; the others on the lower part of the Sacramento : 

 western representatives of common eastern species. 



30. G A I L L A R D I A, Foug. 

 1. Gaillardia aristata, Pursh. 



Hab. Oregon; widely diffused and common ; the western represen- 

 tative of this mainly Atlantic North American genus. 



