252 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Petals broadly obovate, not more than 

 8 mm. long; basal leaves not 

 deft, oblong to deltoid-ovate.. 6. R. subsagittatus. 

 Achenes pubescent. 



Part of the basal leaves undivided; stems 

 and leaves with only a few soft and 

 inconspicuous hairs. 

 Petals 5 to 6 mm. long; head of achenes 



oblong 7. R. inamoenus. 



Petals 3 to 5 mm. long; head of achenes 



cylindric 12. R. micropetalus. 



All of the leaves cleft; stems and leaves 

 densely hirsute. 

 Head of carpels oblong; petals not 

 longer than the sepals; plants 



mostly erect 8. R. pennsylvanicus. 



Head of carpels globose; petals longer 

 than the sepals; plants low and 

 spreading 9. R. macounii. 



1. Ranunculus macauleyi A. Gray, Proc. Amer. Acad. 15: 45. 1880. 

 Type locality: Rocky Mountains in San Juan County, Colorado. 

 Range: Colorado and northern New Mexico. 



New Mexico: Pecos P>aldy; Truchas Peak. Meadows, in the Arctic-Alpine Zone. 

 A most handsome species with large bright yellow flowers set off by rich brown 

 sepals. The plants grow up to the very edge of the snow banks. 



2. Ranunculus hydrocharoides A. Gray, Mem. Amer. Acad. n. ser. 5: 306. 1861. 

 Type locality: Wet marshes, Mabibi, Sonora. 



Range: Southwestern New Mexico and southern Arizona. 

 New Mexico: Cloverdale; Middle Fork of the Gila. In swamps. 



3. Ranunculus purshii Richards. Bot. App. Frankl. Journ. 741. 1823. 

 Type locality: "Wooded country from latitude 54° to 64° north." 

 Range: Alaska to Nova Scotia, Oregon, and New Mexico. 



New Mexico: Near Fort Defiance (Palmer). 



4. Ranunculus eremogenes Greene, Erythea 4: 121. 1896. 



Ranunculus sceleratus eremogenes Cockerell, Univ. Mo. Stud. Sci. 2 2 : 124. 1911. 



Type locality: "Of wet springy places and margins of pools in the West American 

 desert regions, from along the eastern base of the Colorado Rocky Mountains, through 

 the Great Basin, and to southeastern Oregon and northeastern British America." 



Range: British America to California and New Mexico. 



New Mexico: Gallo Spring; San Juan; Mangas Springs; Wheelers Ranch; Farm- 

 ington. In marshes, in the Upper Sonoran Zone. 



5. Ranunculus nudatus Greene, Leaflets 1: 211. 1906. 



Type locality: Burro Mountains, New Mexico. Type collected by Metcalfe (no. 

 198). 

 Range: Southwestern New Mexico. 

 New Mexico: Burro Mountains; Santa Rita. In wet soil. 



6. Ranunculus subsagittatus (A. Gray) Greene, Pittonia 2: 59. 1890. 



Ranunculus arizonicus subsagittatus A. Gray, Proc. Amer. Acad. 21: 370. 1886. 



Type locality: "North Arizona in De la Vergne Park of the San Francisco Moun- 

 tains, in wet ground." 



Range: Arizona and New Mexico. 



