First Report on the Flora of Wyoming. 159 



On rocky ledges near the summit of Laramie Peak, August 7, 

 1895 (No. 1608). 

 Mertensia sibirica, Don. Syst. iv, .320. 



Quite a large series ot specimens from many localities and differ- 

 ent altitudes, and of very different general appearance, have all 

 been reduced to this. Environment produces greater differences 

 than is usually conceded. Wet places, along streams and in the 

 mountains; Sybille, July 8, 1894 (No. 408); Garfield Peak, July 29. 

 1894 (No. 689); Union Pass, August 13, 1894 (No. 1031) and other 

 localities. 

 Myosotis sylvatica alpestris, Koch. 



This beautiful little plant is found in abundance in the alpine re- 

 gions of our northern mountains. Little Bald Mountain, August 

 15, 1892 B. C. Buffum; Union Pass, August 11, 1894 (No. 838). 



Onosmondium molle, Mich.x. Fl. Bor. Am. I : 133, t. 15 (1803). 



Rare and probably confined to the eastern part of the state. Orin 

 Junction, August 1892; Platte River, July 14, 1894 (No. 506). 

 Lithospermum angustifolium, Michx. Fl. Bor. Am. i, 130 (1803). 



Very common on the plains and in the mountain valleys. Uni- 

 versity Campus, June 4, 1894 (No. 174); in its fruiting form July 

 23, 1895 (No. 1428). 

 Lithospermum pilosum, Nutt. Journ Acad. Phil, vii, 43 (1834). 



Much less frequent than the preceding ; Middle Pass, June 20, 

 1892; Gros Ventre River, August 18, 1894 (No. 1090). 



CONVOLVULACE^. 



Ipomea leptophylla, Torr. in Frem. Rep. 95 (1845). 



Abundant m the eastern part of the state on the Platte and in the 

 adjacent foothills 



Fort Laramie, September 3, 1892 ; Fairbanks, July 14, 1894 

 (No. 491). 

 Convolvulus sepium, L. Sp. PI. 153 (1753). 



Collected by B. C. Buffum, August 1, 1891, probably at Chey- 

 enne. Rare in the state. 

 Evolvulus argenteus, Pursh Fl, Am. Sept. 187 (1814). E. Niittal- 

 lianus, R. & S. 



Infrequent; dry plains near Uva, July 10, 1894 (No. 398); also 

 at Sheridan, September, 1895. 

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