468 MINNESOTA BOTANICAL STUDIES. 
3. R. parviflorus Linn. Sp. Pl. 2 ed. 780. 1763. 
f. trachyspermus Evi. Sketch 2: 65. 1824. 
Hairy, 4 to 10 inches high, very slender, spreading, branch- 
ing: leaves petioled, reniform to cordate-orbicular, 1% to 1 inch 
broad, 3-cleft or parted or divided, segments cuneate, oval, 
obtuse, cut and toothed; the upper leaves sometimes 5-parted, 
short-petioled: peduncles short, slender; petals pale yellow, 
hardly 1 line long; sepals about the same length: akenes 
oblique, very flat, margined, papillose; beak short, sharp. 
Europe. Naturalized in waste places, Maryland, North Caro- 
lina, Florida, west to Arkansas and Texas. 
4. R. hebecarpus Hoox. & Arn. Bot. Beech. 316. 1841. 
Lf. parviflorus var. TORR. & GRAY, Fl. 1: 25, 659. 1838. 
Le. hebecarpus var. pusillus Wats. Bot. Calif.1:8. 1876. 
Plant shaggy-hairy, slender, % to 1 foot high, branched: 
leaves reniform to roundish, small, 3-5-parted or divided, seg- 
ments sessile or subsessile, often laciniately cleft: peduncles 
short; petals hardly a line long, pale yellow; sepals about 
equalling the petals: akenes few, semi-oval, compressed, 
clothed with recurved bristles; beak short, subulate, recurved: 
head small. Washington through western California to lower 
California. 
5. R. Caleottii Turcz.in Bull. Soc. Nat. Mosc. 27:2: 296. 
1854. 
Roots not seen: plants otherwise annual: stem somewhat 
branched, radical and lower stem-leaves 3-parted, the divisions 
stalked, 3-lobed or parted, the lobes toothed or cut, acute or 
obtuse, appressed pilose; petioles openly pilose with appressed 
hairs; upper stem-leaves 3-parted, the highest one sometimes 
not lobed: sepals reflexed, openly pilose; petals longer than 
sepals, obovate-oblong, obtuse: akenes compressed, margined, 
tubercles on the sides, style deciduous. Oaxaca, Mex. Alt. 
7,000 to 9,000 feet. 
6. R. alceus GREENE, Erythea, 3: 69. 1895. 
One foot high or less, slender, branching, soft-hirsute and 
villous: leaves about 1 inch long, and much like those of A. 
canus: petals roundly obovate, about 1 line long, yellow: 
akenes many, obliquely obovoid, glabrous; beak stout, re- 
curved: head globose. Elk mountains, Mendocino County, 
Calif. 
