Davis: RANUNCULI OF NORTH AMERICA. 489 
61. R. pygmzus Want. FI. Lapp. 157. ¢. 8. fiz. 1812. 
R. Lapponicus Orv. Fl. Dan. ¢. rgg. 1762. Not Linn. 
Very minute, 1 or 2 .inches high, puberulent or glabrous: 
leaves 3—5-lobed or divided, 2 to 5 lines wide, lower ones on 
slender petioles, others subsessile: flowers 2 to 3 lines across ; 
petals yellow, little longer than the sepals: akenes lenticular; 
beak slender: head of fruit somewhat oblong, 2 lines long. 
High Rockies of Montana to Colorado, polar regions across 
America, Greenland, Europe and Asia. 
Var. Sabinii n. var. 
FR. Sabinid R. Br. Parry 1st Voy. App. 264. 1824. 
Flowers larger than the type: sepals hairy. Montana. 
62. R. oxynotus Gray, Proc. Am. Acad. 10: 68. 1874. 
Caudex short, roots fibrous: plant glabrous, 4 to 10 inches 
high: radical leaves in a numerous tuft, 6 to Io lines across, 
mostly round-reniform, with several roundish lobes or deep cre- 
nations: stem leaves 1 or 2, flabelliform to cuneate, 3—5-cleft or 
parted ; lobes lanceolate-linear to oblong: petals yellow, broadly 
obovate, 4 to 5 lines long, exceeding the sepals: akenes com- 
pressed, semiovate, glabrous, about 1 line long; beak strong, 
subulate: head of fruit 6 lines long : receptacle thick and fleshy. 
Mineral King Mt., Mariposa Co., and central Sierras, all in 
California. | 
63. R. digitatus Hoox. Kew Journ. 3: 124. ¢. 4. 1851. 
Very low, glabrous: roots a cluster of slender tubers: stem 
leaves few, subsessile, 2-4-parted; lobes oblong-lanceolate to 
nearly linear; radical leaves similar or entire and lanceolate, 
petiolate: petals 5 to 11, yellow, spatulate-oblong, 3 to 5 lines 
long : akenes slightly compressed and margined ; styles slender : 
head very small, often elongated. Yellowstone Park to north- 
ern Nevada. 
64. R. glaberrimus Hook. Fl. 1: 12. ¢. 5. 1829. 
FP. brevicaulis Hook. Lond. Journ. Bot. 6: 66. 1847. 
fF. Austine GREENE, Erythea, 3: 44. 1895. 
Root a cluster of thickened fibers: plant rather succulent, 4 
to 10 inches high, glabrous: radical leaves roundish to oblan- 
ceolate or spatulate; base tapering or obtuse, often 2—5-lobed 
above, or crenate or entire; stem leaves usually deeply 3-lobed 
or parted, lobes entire: petals yellow, broadly obovate, 3 to 6 
