468 MINNESOTA BOTANICAL STUDIES. 



3. R. parviflorus LINN. Sp. PI. 2 ed. 780. 1763. 

 R. trachysperimcs ELL. Sketch 2: 65. 1824. 



Hairy, 4 to 10 inches high, very slender, spreading, branch- 

 ing : leaves petioled, reniformto cordate-orbicular, y 2 to i 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 i 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 HOOK. & ARN. Bot. Beech. 316. 1841. 

 R. parviflorus var. TORR. & GRAY, Fl. i : 25, 659. 1838. 

 R. hebecarpus var. pustllus WATS. Bot. Calif. I : 8. 1876. 



Plant shaggy-hairy, slender, ^ to i 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 : 276. 

 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 i inch long, and much like those of R. 

 canus: petals roundly obovate, about i line long, yellow: 

 akenes many, obliquely obovoid, glabrous ; beak stout, re- 

 curved : head globose. Elk mountains, Mendocino County, 

 Calif. 



