693 Rydberg : Studies on the Rocky Mountain FijORA 



This species stands in the same relation to A. lanccolata as the 

 preceding does to A. Jiirsiita and the following to A. linearis, dif- 

 fering mostly in the mode of blooming. One of the reasons for 

 holding them as distinct species and not as forms of the species 

 mentioned is that their ranges are different, A. aggregata and A, 

 decumbcns extending further south into Mexico and the Gulf states^ 

 while their cymose analogues are northern, and the range of ^. 

 Bodinii is more limited than that of A. linearis. A. decii7nbens 

 grows in dry soil on the plains, from Missouri and South Dakota 

 to Wyoming, Mexico and Mississippi. 



13. Allionia Bodinii (Holz.) Morong, Mem. Torrey Club,''5 : 



354- 1894 

 Oxybaphus Bodinii HoXz. Contr. U. S. Nat. Herb, i: 287. 1893. 

 In dry soil from western Kansas to Utah and western Texas. 



6. WEDELIA Loeff. Iter. Hisp. 180. 1758 



Allionia L. Syst., Ed. 10, 890, in part. 1759. 

 The genus was based on a plant which the following year 

 received the specific name Allionia incarnata L. 



I. Wedelia incarnata (L.) Kuntze, Rev. Gen. PI. 533. 1892 



Allionia incainiata L. Syst., Ed. 10, 890. 1759. 



From western Texas and southern Colorado to California. 



