RANUNCULACE.E. 217 



2. Delphinium azureum, Mlchx. 



Hab. Okanagan River, and high plains along the Kooskooskee. — 

 A variable species, extending southward through a great part of Cali- 

 fornia, and eastward to the Southern Atlantic States. 



3. Delphinium simplex, Hook. 

 Hab. On the Spokane River, a tributary of the Upper Columbia. 



12. A C N I T U M, Tourn. 



1. Aconitum nasutum, Fisch. 



Hab. Moist and rich prairies of Washington Territory; widely 

 diffused over the western part of the continent, and very variable. — 

 It includes Nuttall's A. Columbianum, &c. 



13. ACT^A, Linn. 

 1. Actjea spicata, Linn., var. aeguta. 



Hab. Dry and fertile woods ; Nisqually, Fraser River, &c. ; not 

 rare in Oregon, and extending to California. — This is Nuttall's A. 

 arguta, and is more nearly like the A. spicata of the Old World than 

 is our A. rubra. The fruit, about the size of a large pea, appears to 

 have been red, and is about 9-seeded. The uppermost leaf is closely 

 sessile and three-parted to the base. 



14. PilONIA, Linn. 

 1. P^onia Brownii, Dougl. 

 Hab. Mountain-sides, interior of Washington Territory and Oregon, 



