MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 65 
42. Potentilla fastigiata Nutt. 
Potentilla fastigiata Nutt.; Torr. & Gray, F). N. Am. 1: 440. 1840. 
Dietr. Syn. Pl. 3: 182; Walp. Rep. 2: 33. 
Gray. Pl. Fendl. in Mem. Amer. Acad. 4: 42; Proc. Am. Acad. 1863 :‘ 61; Porter, 
U.S. Geol. Surv. 1870: 475; Rydb. Bull. Torr. Bot. Club, 24: 7. 
Potentilla holopetala fastigiata Lehm. Stirp. Pug. 9: 46. 1851. 
Walp. Ann. 2: 485; Lehm. Rey. Pot. 79. 
Potentilla gracilis fastigiata Wats. Proc. Am. Acad. 8: 557. 1873. 
Brewer & Wats. Bot. Cal. 1: 179; Coult. Man. Bot. Rocky Mts. 85. 
[LLustRations: PxLate 27, f. 1. 
Stem low, 2-3 dm. high, ascending, generally quite densely silky-villous, rather 
simple. Stipules ovate-lanceolate, often toothed, .5-1 em. long. Leayes on rather 
short petioles, digitate, of 5-7 leaflets, generally rather long sillky-villous on both sides 
and slightly tomentose beneath. Leaflets obovate,-1-3 em. long, coarsely crenate or 
somewhat incised with broad teeth. Cyme generally rather dense. Hypanthium 
silky-villous, in fruit about 8 mm. in diameter. Bractlets oblong, shorter than the tri- 
angular acute sepals. Corolla 10-15 mm. in diameter. Petals broadly obeordate, a lit- 
tle exceeding the sepals. 
This perhaps comes nearest to P. pulcherrima, resembling it in the form of the leaf- 
lets and the size of the flower, but it is a smaller plant, less than 3 dm. high and with a 
rather crowded cyme. The pubescence of the leaves is also different, long, silky and 
with very little tomentum beneath. It is a rather rare plant, entending from Wyoming 
and California to Saskatchewan. 
Wyoming: A. Nelson, No. 931, 1894. 
Idaho: Sandberg, 1881 and 1887. 
Assiniboia: J. Macoun, No. 4539, 1894. 
Nevada: J. Torrey, No. 121, 1865. 
Yellowstone National Park: 'T. H. Burglehaus, 1893. 
California: Geo. Hanson, No. 297, 1892. 
Washington: W.N. Suksdorf, No. 2488, 1884. 
Rocky Mts.: Nuttall ( type). 
43. Potentilla pulcherrima Lehi. 
Potentilla pulcherrima Lehm. Stirps Puc. 2-310 es30: 
Don, Gard. Dict. 2: 556; Walp. Ann..2: 482; Lehm. Rev. Pot. 69. 
at. Man. Ed. 7: 459; Eat. & Wr. N. Am. Bot. 374: Wats. in King’s Rep. 5: 87; 
