212 Karl M. Wiegand and Arthur J. Eames 



Lab. to N. J. along the coast ; also in cent. N. Y., along the Great Lakes, through- 

 out the saline plains of w. U. S., and on the Pacific coast in Alaska and Calif. Found 

 also in Greenland and Eurasia. 



5. R. reptans L., var. ovalis (Bigel.) T. & G. (See Rhodora 19:135. 1917. R. 



Flammula, var. reptans, of Gray's Man., ed. 7, and of Cayuga Fl.) 



Damp sandy shores, with no apparent relation to lime content of the soil ; rare. 

 July-Sept. 



Appearing along the shores of Cayuga Lake rather sporadically : near Renwick, 

 many years ago, not seen since; s. w. part of Myers Point, 1880 (D.) ; Farley Point 

 and shores near, 1895 and 1918-1919; Cayuga Bridge (Herb. J. J. Thomas, £>.). 



Newf. to the n. w. coast, southw. to n. N. J., Pa., Mich., and in the Rocky Mts. 

 to Colo. Characteristic of sandy acid shores in the Adirondacks and along the 

 Atlantic coast. Found also in Eu. 



6. R. sceleratus L. Cursed Buttercup. 



Open marshy soil or moist alluvial fields probably containing a trace or more of 

 salt ; frequent. May-July. 



Flats from Buttermilk Creek to Cayuga Lake ; Union Springs and Canoga, 

 occasional (D.) ; "frequent on the Cayuga Marshes" (D.) ; w. of Howland Island; 

 salt flats e. of Montezuma ; Spring Lake ; and elsewhere. 



Widely distributed almost throughout N. A. except in the extreme North, usually 

 in saline situations. 



The merest trace of salt in the soils of the Ontario plain is apparently sufficient 

 to establish this plant there. 



7. R. abortivus L. Small-flowered Buttercup. 



Scrubby hillsides and along brooks, roadsides, and lowland woods, in light, not 

 strongly calcareous, soils ; common. May. 



Lab. to Man., southw. to Fla., Ark., and Colo., including the Coastal Plain. 



Certain plants occurring on a hillside along the Inlet Valley near the Ithaca-New- 

 field town line, also s. of the mouth of Coy Glen, on edges of cliffs n. of King Ferry, 

 in low woods on Farley Point, and at Union Springs, are to be referred to var. 

 eucyclus Fernald. In this flora, however, the var. eucyclus seems to be a summer 

 condition of the typical form. . 



8. R. recurvatus Poir. Hooked Buttercup. 



Sandy bottom lands, rich damp upland woods, and loamy ravine soils-; frequent. 

 May-June. 



Enfield Glen; Six Mile Creek; Cascadilla Glen; Renwick woods and slope; near 

 the McLean Bogs ; Beaver Brook ; ravine s. of Willets ; and elsewhere. Not found 

 in the heavier nor in the more calcareous soils. 



N. S. to Man., southw. to Fla., Ala., Mo., and Kans. ; less frequent on the Coastal 

 Plain. 



9. R. pennsylvanicus L. f. Bristly Buttercup. 



Low sandy or loamy ground, with no apparent reference to lime content ; frequent. 

 July-Aug. 



Jennings Pond ; Newfield ; various places on the flats about Ithaca and along 

 Cayuga Lake; Taughannock Point; moor of Phillips Pond; near Crusoe Lake; 

 and elsewhere. 



Newf. to B. C, southw. to Ga., Kans., and Colo. ; infrequent or rare on the Atlan- 

 tic Coastal Plain. 



