RANUNCULACEAE. 



[Voi,. II. 



15. Ranunculus abortivus I,. Kidney- 

 leaved Crowfoot. (Fig. 1609.) 



Ranunculus abortivus I,. Sp. PI. 551. 1753. 



Glabrous, or but sparingly pubescent, 6 / -2 

 high, branched. Basal leaves long-petioled, 

 bright green, thick, creuate or sometimes lobed, 

 broadly ovate, obtuse, aud generally cordate or 

 reniform, the caulinc sessile or nearly so, di- 

 vided into oblong or linear somewhat cuneate 

 lobes; head of fruit globose, the receptacle 

 short, pubescent; flowers yellow, 2 // ~3 // broad, 

 the petals oblong, shorter than the reflexed 

 calyx; achenes tipped with a minute curved 

 beak. 



In woods and moist grounds, Labrador and 

 Nova Scotia to Manitoba, south to Florida, Arkan- 

 sas and Colorado. April-June. 



16. Ranunculus micranthus Nutt. 

 Rock Crowfoot. (Fig. 1610.) 



Ranunculus micranthus Nutt; T. & G. Fl. N. A. I: 



1838. 



Ranunculus abortiiiis var. micranthus A. Gray, 

 Man. Ed. 5, 42. 1867. 



Similar to the preceding species but usually 

 smaller, villous with spreading hairs, flowering 

 when very young, 6 / -i8 / tall. Leaves thin, dull 

 green, the basal ones ovate or suborbicular, 3- 

 lobed or crenate, narrowed, rounded or subcor- 

 dale at the base; segments of the upper leaves 

 narrow, entire or sharply toothed; flowers yellow, 

 about 3" broad; sepals narrowed into a short 

 claw; petals oblong or oval, 2-3 times as long as 

 wide; head of fruit rather longer than thick, the 

 receptacle linear, glabrous or very nearly so. 



In rich woods, often on rocks, range apparently m-arly that of A', abortivus. 

 blooms somewhat earlier than that species. Roots tuberous. April-May. 



In New York it 





17. Ranunculus Alleghani6nsis Brit- 

 ton. Mountain Crowfoot. (Fig. 1611.) 



KantiHi-uliis Allcghanicnsis Britton, Bull. Torr. 



Club, 22: 224. 1895. 



Similar in aspect to R. abortivus and R. mi- 

 cranthus, glabrous, stem widely branched, i- 

 2 tall. Basal leaves reniform or suborbicular, 

 6//_ 2 / w i ( ] e> long-pctioled, crenate or some of 

 them lobed, the teeth and lobes subacute; stem 

 leaves sessile or the lower petioled, divided 

 nearly or quite to the base into linear acute en- 

 tire toothed or cleft segments; flowers about 3" 

 broad; petals oblong, not exceeding the calyx, 

 yellow, glandular; head of fruit globose or glo- 

 bose-oblong, 2" in diameter; achenes slightly 

 compressed and margined, tipped with subulate 

 hooked or recurved styles of about one-half their 

 length. 



Mountains of Virginia and North Carolina to the 

 Catskills, and eastern Massachusetts. April-May. 



