498 MINNESOTA BOTANICAL STUDIES. 



4 to 7, bright yellow, 2 to 3 lines long, exceeding the sepals; 

 stamens many : akenes flattened somewhat ; beak minute, sharp. 

 Coast of Arctic America, Newfoundland ; near ponds and lakes, 

 New Jersey to California : Greenland, Europe, Asia. 



Var. Gormani n. var. 

 R. Gormani GREENE, Pitt. 3: 91. 1896. 



Like the type, but with leaves broadly ovate or deltoid-ovate, 

 acute, few-toothed, 6 to 8 lines long. Near Crater lake, south- 

 ern Oregon. 



90. R. Unalaschensis BESS, ex Ledeb. Fl. Ross, i : 32. 



1841. 



R. Flammula var. intermedius HOOK. Fl. I : n. 1829. 

 R. reptans var. intermedius TORR. & GRAY, Fl. I : 16. 



1838. 

 R. Flammula var. Unalaschensis LEDEB. ex Regel, Bull. 



Soc. Nat. Mosc. 34: pt. 2 : 41. 1861. 

 R. reptans var. strigulosus FREYN, Deutsch. Bot. Monats. 



8: 181. 1891. 

 R. intermedius HELLER, Bull. Torr. Club, 25 : 280. 



1898. Not Poir. nor Eaton. 



This differs from R. reptans in its more robust habit, longer 

 peduncles, leaves larger, sometimes being 3 to 5 inches long 

 and 2 to 6 lines wide. Newfoundland past the Great Lakes to 

 Oregon and California, northward. Europe. Asia. 



91. R. microlonchus GREENE, Erythea, 4: 122. 1896. 



Allied to R. reptans, often more hairy ; stem slender, some- 

 what ascending, i -few-flowered : radical leaves in a tuft, shaped 

 as in that species or a little broader ; stem leaves few, short 

 petioled to subsessile : flowers 4 lines broad ; petals 5 to 8, ob- 

 tuse ; sepals spreading : akenes as in that species but with a 

 short, stout, blunt beak : head of fruit depressed-globose. 

 Northern Idaho. 



92. R. trachyspermus ENGELM. ex Gray PL Lindh. i : 3. 



1850. 



R. trachyspermus var. angustifolius ENGELM. 1. c. 



Annual : plant glabrous, y 2 to 2 feet high, sometimes rooting 



at the lower nodes : leaves slender-petioled, oblong to linear 



lanceolate, entire or denticulate, bases often tapering ; petioles 



of stem leaves expanded near the bases : peduncles rather short ; 



