Da-sis: RANUNCULI OF NORTH AMERICA. 473 



true stem, scape about 3 inches high, nearly erect, slender: 

 leaves about i inch long on petioles the same length, blade 3- 

 divided or parted, the leaflets sessile or the middle one stalked ; 

 segments with about 3 entire or toothed cuneate lobes : petals 5, 

 yellow, large, obovate-cuneate, obcordate or retuse ; sepals 

 shorter, spreading, pubescent : carpels much like those of R. 

 acris. Collected June, 1895, by Elizabeth Taylor at Seydis- 

 fjordr, Iceland. 



19. R. orthorhynchus HOOK, ex GRAY, Proc. Am. Acad. 21 : 



377- 1887- 

 R. ornithorhynchus WALP. Rep. 1 : 43. 1842 (by error). 



Root thick fibrous : plant 10 to 18 inches high, erect, branched, 

 hirsute to nearly glabrous : leaves oblong in outline, pinnately 

 compound ; 5 to 7 leaflets cleft and incised, quite variable ; up- 

 der leaflets often confluent and sessile or nearly so, lower ones 

 well stalked : petals 7 to 16, yellow, rarely purple beneath, ob- 

 ovate, 4 to 6 lines long ; sepals much shorter, pubescent beneath, 

 reflexed, deciduous : akenes glabrous, obliquely ovoid, com- 

 pressed, i to 2 lines long, margined ; style of same length, 

 straight, rigid, persistent : head globose. May to July. Wet 

 places. British Columbia to western Oregon and Montana. 

 Cultivated. 



Var. platyphyllus GRAY, Proc. Am. Acad. 21 : 377. 1886. 

 R. macranthus WATS. Bot. King Exp. 9. 1871. Not 



Scheele. 

 R, maximus GREENE, Bull. Torr. Club, 14: 118. 1887. 



Often 3 feet or more high : leaves larger, 2 to 4 inches across, 

 the leaflets often 3 inches long, and laciniately cut : petals often 

 larger than the type. Wasatch Mountains, northern Utah, Py 

 ramid lake, northern Nevada, northern California, Washington, 

 Idaho. Cultivated. 



20. R. dichotomus Moc. & SESSE. ex DC. Syst. i : 288. 

 1818. 



Stem erect, often dichotomously branched : radical leaves 

 very long-petioled, bipinnate : flowers yellow ; sepals reflexed : 

 akenes with acuminate erect beaks. Mexico. 



21. R. Llavsenus SCHLECHT. in Linnaea, 10 : 233. 1836. 

 Stem prostrate, the flowers on erect or ascending branches, 



terminal : leaves 3-divided and again 3-lobed, segments nar- 



