1902] ROCKY MOUNTAIN PLANTS 35 



Dr. Gray states in the Syn, FL, ** station and characters" indicate 

 this. In the Kew I?tdex this synonomy is accepted without 

 question. Then, too, Nuttall's characterization, ** leaves lonien- 

 tose on the lower surface," would imply that the upper surface 

 was not tomentose. It is true also that while Dr. Gray In PL 

 Fendl. thought his Franseria tome^itosa was NuttalTs Ambrosia 

 tomefitosa, he changed his mind about the matter In a later publi- 

 cation {^Syn. FL 251). 



Gaertneria Grayi, n. nom. — Franseria tomentosa Gray, PI . 

 Fendl. 80. — Since the preceding change necessitates another, 

 this species may appropriately be dedicated to the original 

 describer. 



University of Wyoming, 



Laramie, Wyoming. 



