RANUNCULACEAE. 



Vol, II. 



22. Ranunculus bulbosus L. Bulbous But- 

 tercup. Yellow weed or Gowan. 

 Fig. 1 916. 



Ranunculus bulbosus L. Sp. PI. 554. 1753. 



Erect from a bulbous-thickened base, hairy, 

 6'-i8' high. Leaves petioled, 3-divided, the ter- 

 minal division stalked, the lateral ones sessile or 

 nearly so, all variously lobed and cleft, flowers 

 bright yellow, about i' broad; petals 5-7, much 

 longer than the reflexed sepals, obovate, rounded; 

 head of fruit globose, s"-6" broad; achenes com- 

 pressed, very short-beaked. 



In fields and along roadsides, New England to 

 North Carolina, Tennessee and Louisiana. Natural- 

 ized from Europe. May-June. In England the name 

 Buttercups is chiefly applied to this species and to R. 

 rcpens and R. acris ; called also in middle English 

 Kingcups. Goldcups, Butter-flowers and Blister-flow- 

 ers. Frogwort. Pilewort. Golden knops. Cuckoo- 

 buds. Pissabed. Horse-gold. St. Anthony's-turnip. 

 May-July. 



23. Ranunculus pennsylvanicus L. f. 



Bristly Buttercup or Crowfoot 



Fig. 1917. 



Ranunculus pennsylvanicus L. f. Suppl. 272 1781. 



Erect, branching, pilose-hispid, i°-2° high, 

 leafy. Leaves thin, 3-divided ; divisions stalked, 

 deeply 3-cleft, the lobes lanceolate, cuneate, 

 acute, incised; flowers yellow, 3"-4" wide; petals 

 equalling the reflexed sepals or shorter ; head of 

 fruit oblong or cyHndric, 3" thick, sometimes 6" 

 long; achenes smooth, pointed with a sharp beak 

 one-third their length ; receptacle conic, hairy. 



In wet, open places. Nova Scotia to Georgia, 

 British Columbia, Kansas and Colorado. June-Aug. 



24. Ranunculus Macounii Britton. Ma- 

 coun's Buttercup. Fig. 1918. 



Ranunculus hispidus Hook. FI. Bor. Am. i : 19. 1829. 



Not Michx. 1803. 

 Ranunculus Macounii Britton, Trans. N. Y. Acad. Sci. 



12: 3. 1892. 



Erect or diffuse, hairy, branching, i°-2° high. 

 Leaves 3-divided, the blade 2'-^' long, the divi- 

 sions broadly oblong to ovate, acute, cuneate, 

 variously cleft and lobed; flowers s"-6" broad, 

 yellow, the petals exceeding the spreading or 

 slightly reflexed calyx; head of fruit globose to 

 oblong, 4" thick; achenes smooth, pointed with a 

 sharp beak about one-fourth their length ; recep- 

 tacle obovoid. 



Quebec and Ontario to Illinois, Minnesota and 

 west to British Columbia and Washington, extending 

 south in the Rocky Mountains to Arizona. Summer. 



