Davis: RANUNCULI OF NORTH AMERICA. 471 



R. fascicularis SCHLECHT. Animad. Ranunc. 2 : 30. t. 2. 



1820. Not Muhl. 

 R. SchlechtendaUittoQiL. Fl. i : 21. 1829. (As to type.) 



Plant glabrous or sometimes pubescent, i to 3 feet high, 

 branching, lower branches often rooting at their nodes, and run- 

 ning some distance : lower petioles very long : leaves composed 

 of 3-stalked leaflets, which are mostly cuneate and cleft into 

 broad lobes : petals yellow, obovate, 6 lines long ; sepals half 

 as long, spreading : akenes much compressed, widely margined ; 

 beak nearly as long, subulate, flat: head of fruit rather small, 

 ovoid. Often in low, wet places. New Brunswick to Georgia, 

 northwestward to Winnipeg. 



13. R. Hookeri SCHLECHT. in Linnaea, 9: 610. 1835. 



Stem erect, branched, i to 2 feet high : lower leaves and 

 petioles pilose with spreading yellowish hairs, upper leaves 

 with peduncles sulcate, pubescence appressed : leaves subpin- 

 nate, nearly as narrow as in R. repens : sepals reflexed ; petals 

 narrow ; receptacle pilose : akenes oblique, roundly obovate, 

 laterally margined, marked with minute impressions and often 

 a few scattered tubercles on sides, acuminate ; base of style per- 

 sistent : head of fruit globose. Allied to /?. acris in habit and 

 roots ; to R. repens in foliage. Its narrow often numerous 

 petals and reflexed calyx remove it from all. Vera Cruz, 

 Oaxaca, in San Miquelito Mts., and other places in Mexico. 

 Common in grass lands. 



14. R. pilosus H.B.K. Nov. Gen. & Sp. 5 : 36. 1821. 



Roots thick-fibrous, many : stem ascending, somewhat di- 

 chotomously branched above, hirsute : radical leaves petiolate, 

 ternate, appressed-pilose, 10 to 15 lines wide, i to i^ inches 

 long ; leaflets cut-toothed, lateral ones sessile, ovate-rhomboid, 

 sometimes 2-3-lobed ; terminal leaflets large, on stalks 2 to 6 

 lines long, subrotund, 3-lobed or 3-parted ; lower stem leaf like 

 the radical leaves but much dissected, short-petioled ; upper 

 stem leaves gradually less dissected, those near the flowers 

 sessile : flowers as large as in R. bulbostis, peduncles silky ; 

 sepals 5, ovate, acutish, pubescent outside, reflexed, much 

 shorter than the petals, deciduous ; petals 5 (rarely 6), oblong, 

 with rounded tips, 5 lines long, glabrous, supplied with a scale 

 on the claw : akenes glabrous, oblong to obovate, compressed, 



