8 RANUNCULACEiE. (CROWFOOT FAMILY.) 



13. B. adoneus, Gray. Low, sparsely villous, becoming glabrous : stems 

 branching from the base, 1 to 3-leaved above, sometimes sarmentose-decum- 

 bent and 2 to 3-flowered : leaves twice pedately parted, segments narrowly 

 linear : petals golden-yellow, twice exceeding the subvillous sepals : akenes 

 crowded in an oval head, turgid, with the rather long ensiform beak scarwus- 

 wiiii/i;d on each edge. — Proc. Acad. Philad. 1863, 56. High altitudes close 

 to the snow, Colorado and northward. 



= = Stems bearing more than one flower. 

 a. Dwarf (2 to 3 inches high). 



14. R. digitatus, Hook. Very glabrous : leaves few, petioled, digitately 

 lobed, the 3 to 5 segments narrowly lanceolate or obloug-spatulate, obtuse : 

 flowers 2 or 3, terminal, with reflexed sepals and 7 to 11 oblong cnneate pet- 

 als : akenes beaked with a subulate recurved style. — In the Wasatch, 

 N. Utah, and northward into British America. 



b. A foot or two high. 



15. R. afflnis, R. Br. Radical leaves petioled, usually pedately midtijid ; 

 cauline ones subsessile, digitate, with broadly linear lobes : akenes with re- 

 curved beaks in oblong-cylindrical heads, more or less pubescent. — Colorado 

 and northward. 



Var. leiocarpus, Trautv. Lower leaves usually lobed or cremate : flowers 

 small : carpels smooth or somewhat pubescent. — Colorado. 



Var. cardiophyllus, Gray. Hirsutely pubescent: radical leaves round- 

 cordate, undivided or many-cleft ; cauline ones palmately many-cleft : flowers 

 an inch in diameter. — Same range as the species. 



16. R. Nelsoni, Gray. Sparingly pilose: the simple radical leaves often 

 3 to 4 inches in diameter, more or less deeply 3-lobed ; the uppermost rarely 

 parted ; the lower usually cordate in outline : petals not more than 3 lines long, 

 exceeding the sepals : akenes pilose (sometimes glabrous), in a small head, 

 rigid, more or less scattered, bearing a very much hooked style of the sajite 

 length. — Proc. Am. Acad. viii. 374. About Yellowstone Lake and far north- 

 ward. 



+- +^ +- Leaves alternately divided. 



17. R. PennsylvaniCUS, L. Hirsute with rough spreadingbristly hairs : 

 ( :em stout, erect : divisions of the leaves stalked, somewhat ovate, unequally 

 3-cleft, sharply cut and toothed, acute : petals pale, not exceeding the sepals : 



akenes not margined, pointed with a sharp straight beak, in oblong Jieads. 



Colorado anil northward, and in the Atlantic States. 



18. R. repens, L. Low, hairy or nearly glabrous : stems ascending and 

 some of them forming long runners : divisions of the leaves all (or at least the 

 terminal one) stalked, broadly wedge-shaped or ovate, unequallv 3-cleft or 

 parted and variously cut : petals obovate, much larger than the spreading sepals • 



akenes strongly margined,, poi.ntedby astout straightish beak, in globular heads 



Across the continent. 



19. R. macranthllS, Scheele. Stem 'erect, taller, more or less hirsute 

 with spreading hairs : leaves ternately or more frequently bi-ternately divided 

 segments usually stalked, laeiniately lobed and toothed : flowers large, with the 

 sepals strictly reflexed ; ukencs crowded in subglobcsc heads, about equalling the 



