Davis: RANUNCULI OF NORTH AMERICA. 473 
true stem, scape about 3 inches high, nearly erect, slender: 
leaves about 1 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 A. 
acrts. Collected June, 1895, by Elizabeth Taylor at Seydis- 
fjordr, Iceland. 
Ig. R. orthorhynchus Hook. ex Gray, Proc. Am. Acad. 21: 
377. 1887. 
R. ornithorhynchus WaAuP. 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, 1 to 2 lineslong, 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. 
FP. 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. & SeEssE. ex DC. Syst. 1: 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. Llavenus ScHLEcHT. in Linnea, 10: 233. 1836. 
Stem prostrate, the flowers on erect or ascending branches, 
terminal: leaves 3-divided and again 3-lobed, segments nar- 
