478 MINNESOTA BOTANICAL STUDIES. 
Var. Harveyi Gray, Proc. Am. Acad. 21: 372. 1886. 
LP. abortivus var. grandifiorus ENGELM. ex Branner & Co- 
ville; pack. Geol, Surv. 0, 7162. (80a. 
Ft. Harveyt Britron, Mem. Torr. Club, 5: 159. 1894. 
Stem and foliage more slender and roots often thicker than 
in the type: plant somewhat pubescent: petals of the extreme 
forms 3 lines long and much longer than the sepals: akenes 
sometimes few, large and in a globose head, but varying to 
those of the type. Damp rocks, Arkansas to St. Louis, Mo. 
Var. australis BRAND. Zoe 4: 399. 1894. 
Lower leaves large, reniform: petals 2 to 3 lines long; 
flowering in August. Abundant in wet places, high summits 
of Sierra de la Laguna and San Fransisquito, Lower Cali- 
fornia. 
Bo. Rosceleratus Linn. Sp. PI. 551. § 1753; 
Stems stout, hollow: plant glabrous or nearly so, one-half to 
2 feet high, branching: radical and lower stem leaves thick, 
long-petioled, 3—5-lobed, reniform or cordate; lobes cuneate, 
crenately incised or cleft; upper stem leaves sessile or petioled, 
deeply lobed or parted; the lobes cuneate-oblong or linear, 
toothed or entire: petals 1 to 2 lines long, yellow; sepals often 
a little shorter: akenes numerous, very small, compressed, 
glabrous, barely apiculate: head oblong. April to Aug. Wet 
ditches and shallow water. New Brunswick to Florida and 
somewhat westward. Europe and Asia. 
34. R. eremogenes GREENE, Erythea, 4: 121. 1896. 
FP. sceleratus var. multtfidus Nutr. ex Torr. & Gray, FI. 
BeiO.)) 5030- 
Leaves more dissected than /?. sceleratus: stem nearly leaf- 
less: head of akenes nearly globose or ovate, large. Habitat 
of that species, eastern base of Rockies in Colorado to the 
Sierra Nevadas, to northwest British America and south to 
Arizona. 
Var. degener GREENE, Pitt. 4: 144. Ig00. 
Stems several, short, ascending: roots coarser than in the 
type: akenes with no marginal development: head more 
rounded. Southern Colorado. 
35. R. Allegheniensis Brirron, Bull. Torr. Club, 22: 224. 
1895. 
FR. aboritous Hook. Fl. 1: 15. 1829. In‘part. 
