1 82 UNIVERSITY OF MISSOURI STUDIES [33O 



309. OSMORRHIZA Raf. Sweet cicely. 



749. 0. longistylis (Terr.) DC. [Washingtonia longistylis 

 (Terr.) Britten]. Smooth sweet cicely. 



Gulches in the mesas at the base of the foothills, rare, 5700- 

 6300 ft. (Daniels, 118). 



Nova Scotia to Assiniboia ; Georgia to Colorado. 



750. 0. obtusa (C. & R.) Fernald [Washingtonia obtusa C. 

 & R.] . Obtuse-fruited sweet cicely. 



Common in caiions in the mesas, foothills and mountains, 

 5700-1 1000 (Arapahoe Trail) ft. (Daniels, 128). 

 Alberta to New Mexico and California. 



310. CARUM L. Caraway. 



751. C. Carvi L. Common caraway. 



Escaped in the mountains between Sunshine and Ward 

 (Rydberg). 



Europe and the Mediterranean region to Thibet and Si- 

 beria, thence to North America. 



311. CICTJTA L. Water hemlock. Cowbane. 



752. C. occidentalis Greene. Western cowbane. Western 

 musquash root. 



Swales in the plains, 5100-5600 ft. (Daniels, 412). 

 North Dakota to Idaho ; New Mexico to California. 



312. HARBOTJRIA C. & R. Harbour's hemlock. 



753. H. trachypleura (Gray) C. & R. [Cicuta trachypleura 

 (Gray) S. Wats.]. Rough-ribbed Harbour's hemlock. 



At Boulder, and in the mountains between Sunshine and 

 Ward (Rydberg). In Boulder Cafion (Porter & Coulter). St. 

 Vrain Canon (Coulter in Wabash College Herb.). Common 

 in the foothills. (Daniels, 157, in part.) 



Wyoming to New Mexico. 



313. ALETES C. & R. Mountain caraway. 



754. A. obovata Rydb. Obovate-leaved mountain caraway. 

 Very common on naked mountain slopes, 6000-8100 (sum- 

 mit of Green Mt.) ft. (Daniels, 145). 



Colorado. 



