RYDBERG: STUDIES ON THE Rocky MounTAIN Frora 693 
This species stands in the same relation to A. Janceolata as the 
preceding does to A. /irsuta 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. 
decumbens extending further south into Mexico and the Gulf states, 
while their cymose analogues are northern, and the range of A. 
Bodinii is more limited than that of A. dinearis. A. decumbens 
grows in dry soil on the plains, from Missouri-and South Dakota 
to Wyoming, Mexico and Mississippi. 
13. AxtiioniA Bopinit (Holz.) Morong, Mem. Torrey Club, 5: 
354. 1804 
Oxybaphus Bodinit Holz. Contr. U. S. Nat. Herb. 1: 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 Adfonia incarnata L. 
I. WEDELIA INCARNATA (L.) Kuntze, Rev. Gen. Pl. 533. 1892 
Allionia incarnata L. Syst., Ed. 10, 890. 1759. a 
From western Texas and southern Colorado to California, 
