First Report on the Flora of Wyoming: 103 



probable that a careful examination will show at least some varie- 

 ties which ought to be separated from the species. In wet meadows 

 and along mountain streams. 



Laramie River, July 9, 1894 (No. .325) ; Wallace Creek, July 29, 

 1894 (No. H65); Wind River Mountains, August 1.3, 1894 (No. 

 931); Table Mountain, June 30, 1895 (No. 1347); La Plata Mines, 

 August 21, 1895 (No. 1821). 

 Potentilla gracilis fastigiata, Watson, Proc. Am. Acad, viii, 557 

 (1873). 



Union Pass, August 13, 1894 (No. 990); Centennial Valley, Au- 

 gust 25, 1895 (No. 1858). 

 Potentilla gracilis flabelliformis, Torr. & Gray, Fl. (1838). 



A rare and beautiful plant, the deeply pinnatifid leaflets densely 

 white tomentose on the lower surface. 



Meadow Creek, August 9, 1894 (No. 786), 

 Potentilla Hippiana, Lehm. Nov. Stirp. Pug. ii, 197 (1830). 



Very common on rocky slopes and hills. 



Laramie Hills, July 7, 1894 (No. 410); Garfield Peak, July 29, 

 (No. 651) ; Table Mountain, June 29, 1895 (No. 1368). 

 Potentilla Hippiana pulcherrima, Watson, Proc. Am. Acad, viii, 555 

 (1S73). Potentilla pitlcherri)na, Lehm. 



This is not common, and seems to have affinities with P. gracilis, 

 P. Pennsylvanica and P. Hippiana. 



La Plata Mines, August 22, 1895 (No. 1789). 



Potentilla humifusa, Nutt. Gen. i, 330 (1818). 



Common early in the year on gravelly hillsides. 

 Laramie Hills, June 2, 1894 (No. 99); May 18, 1895 (No. 1216). 

 Potentilla Norvegica, L. Sp. PI. 499 (1753). P. Monspeliensis, L. 

 Apparently throughout the state. 



Platte River and Willow Creek, July 1894 (Nos. 502 and 565); 

 Laramie. September 16, 1894 (No. 1143); Cummins, July 30, 1895 

 (No. 1474). 



Potentilla Pennsylvanica, L. Mant. 76 (1767). 



Observed but once. 



Bessemer, on the Platte River, July 26, 1894 (No. 612). 

 Potentilla Pennsylvanica strigosa, Pursh, Fl. Am. Sept. 356 (1814). 



In rather dry valleys; more frequent than the species. 



