102 Wyoming' Experiment Station. 



specimens, but as the apical portion is early deciduous it appears 

 perfectly straight in maturer blossoms. 



Union Pass, August 11, 1894 (No. 829); Saw Mill Creek, May 

 25, 1895 (No. 1258). 

 Fragaria vesca Americana, Porter, Bull. Torr. Bot. Club, xvii, 15 

 (1890). 



In mountain meadows and valleys, in parks and on wet hillsides 

 everywhere. Sometimes fruiting abundantly, the berries small but 

 sweet. 



Horse Creek, June 9, 1894 (No. 207). Strmvberry . 



Fragaria Virginiana Illinoensis, Prince, Gray Man Ed. 5, 155 (1867). 

 This species is rare, at least about Laramie, but specimens col- 

 lected by A. H. Danielson near Jelm Mountain, May, 1895, seem to 

 be of this form (No. 1209). 

 Potentilla anserina, L. Sp. PI. 495 (1753). 



Common in wet soils, especially near slightly alkali marshes. 

 Laramie all summer. 



Collected on Green River, August 26, 1894 (No. 1039). 

 Potentilla arguta, Pursh, Fl. Am. Sept. 736 (1814). 



Formmg immense yellow patches among the rocks in the hills. 

 A fine plant. 



Pole Creek Hills, June 2, 1894 (No. 95); June 30, 1895 (No/ 

 1351). 

 Potentilla dissecta, Pursh, Fl. Am. Sept. (1814). 



This fine species is probably confined to high elevations. 



Teton Mountains, August 22, 1894 (No. 970); LaPlata Mines, 

 August 20, 1895 (No. 1773). 



Potentilla fruticosa, L. Sp. PI. 495 (1753). 



Common on the banks of mountain streams. 



Wind River, .August 9, 1894 (No. 748); Little Sandy, August 30, 



1894 (No. 1127). 



Potentilla glandulosa, Lindl. Bot. Reg. xix, t. 1583 (1833). 

 Occasional along streams in sandy loam. . 

 LTnion Pass, August 12,1894 (No. 867); Cummins, July 30, 



1895 (No. 1493). 



Potentilla gracilis, Dougl. Hook. Bot. Mag. (1830). 



This is a most polymorphous species, the forms of it differing 

 strikingly as to tomentum, hirsuteness, leaf margin, etc. It seems 



