144 
RANUNCULACEAE. 
Basal leaf-blades cordate at the base; plant glabrous. 15. R. abortivus. 
Basal leaf-blades rarely cordate at the base ; plant hairy. 
16. R. micranthus. 
All the leaf-blades divided or lobed. 
Lower leaf-blades less deeply lobed, often not more than half down to the base. 
17. R. sceleratus. 
Leaf-blades all divided to near the base. 18. R. eremogenes. 
Recurvati. 
Flowers small; petals only 2-5 mm. long. 
Stem glabrous. 
Stem hairy ; with spreading hairs. 
Petals 2-3 mm. long. 20. R. 
Petals 4-5 mm. long. 21. R. 
Flowers larger; petals 5-10 mm. long; stem appressed-pubescent. 
22. R. acriformis. 
Repentes. 
19. R. Douglasii. 
Bongardii. 
Earlei. 
Heads of achenes oblong, about 5 mm. thick. 
Heads of achenes globose, about 8 mm. thick. 
23. R. pennsylvanicus. 
24. R. Macounii. 
Multifidi. 
Leaf-blades deeply cordate at the base; primary divisions lobed or dissected. 
25. R. Purshii. 
Leaf-blades truncate or slightly cordate at the base ; primary lobes merely crenate 
or entire. . 26. R. intertextus. 
1. Ranunculus reptans L. (R . Flammula reptans E. Meyer) On sandy 
shores from Lab. to Alaska, N. J., Utah and Ore.—Alt. 5000-10,000 ft.— 
Vicinity of Como; bank of Michigan, North Park; Trapper’s Lake; plains 
and foot-hills near Boulder; Ward; Gunnison; Parlin; Twin Lakes; Steam¬ 
boat Springs. 
2. Ranunculus unguiculatus Greene. In wet places in the mountains of 
Colo.—Alt. 9000-12,000 ft.—Grand Mesa; Buffalo Pass; near Pagosa Peak; 
Deep Creek Lake, Garfield Co.; Rabbit-Ear Range, Routt Co.; Beaver Creek. 
3. Ranunculus alismaefolius Geyer. (R . calthaefolius Greene) In wet 
places from Wyo. to Nev., Colo., Utah and Ore.—Alt. 10,000-12,000 ft.— 
Deep Creek Lake; Bear Creek Divide; Cameron Pass; Tennessee Pass; 
Golden; Berthoud Pass; headwaters of Clear Creek; alpine ridges east of 
Middle Park. 
4. Ranunculus Macauleyi A. Gray. In wet places, among rocks, on alpine 
peaks of Colo.—Alt. 10,000-12,000 ft.—Red Mountain; Carson; Pagosa Peak; 
West Spanish Peak; Bear Creek Divide; Hinsdale Co. 
5. Ranunculus ellipticus Greene. ( R . glaberrimus Coulter, in part.) In 
wet places from Mont, to B. C., Colo, and Calif.—Alt. 5000-12,000 ft.—Rist. 
Canon; foot-hills, Larimer Co.; gulch west of Bellone; Dixon Canon; foot 
of Horsetooth Mountain; Ft. Collins; Berthoud Pass. 
6. Ranunculus cardiophyllus Hook. (R . affinis cardiophyllus A. Gray) 
In wet meadows and bogs from Sask. to Colo.—Alt. 5ooo-'io,ooo ft.—Table 
Rock; gulch east of Stove Prairie; Campton’s ranch, 12 miles below Grand 
Lake; Veta Pass; Twin Lakes; Tennessee Pass; Graham’s Peak; divide be¬ 
tween Colorado Springs and Denver; Eldora to Baltimore. 
