lOO Wyoini7ig Experiment Station. 



Vicia cracca, L. Sp. PL 735 (1753). 



A chance introduction on the Laramie Experiment Farm, Sep- 

 tember 1895. 

 Lathyrus ornatus, Nutt. T. & G. Fl. N. A. i, 277 (1838). 



Members of this genus are either very rare or the right locaUties 

 have not yet been visited. A specimen in the herbarium from 

 Cheyenne, by Miss Helen Furniss, June 1892. 



ROSACEA. 



Prunus Americana, Marsh, Arb. Am. ill (1785). 



Rare in the southeastern part of the state and probably infrequent 

 everywhere except in the lower altitudes of the northeastern part, 

 where it is reported very plentiful. 



Fairbanks, July 18. 1894 (No. 572). Wild P/um. 



Prunus demissa, Walp. Rep. ii, 10 (1843). 



This and the succeeding species have so much in common that it 

 is difficult to separate them. It may be that none of the specimens 

 are P. Virginiana, but rather only forms of P. demissa. Common 

 on dry creek banks in the hills. 



Telephone Canon, June 15,1894 (No. 230); Table Mountain, 

 June 30, 1895 (No. 1402). Wild Cherry, Choke Cherry. 



Prunus Virginiana, L. Sp. PI. 473 (1753). 



Teton Mountains, August 21, 1894 (No. 943), and by B. C. Buf- 

 fum, 1892. 



Spirea arbuscula, Greene, Erythea, iii, ()3 (1S95). 



Infrequent and, I think, found only at high elevations, 8,000 ft. 

 and upward. 



Teton Mountains, August 21, 1894 (No. 941). 

 Spirea discolor dumosa, Watson, Pursh Fl. 342 (1814). 



A handsome shrub, common on rocky ledges at 8,000 ft. and 

 upward. 



Casper Mountain, July 26, 1894 (No. 607) ; Garfield Peak, July 

 29, 1894 (No. 657); also observed at Laramte Peak and in the 

 Medicine Bow Mountains in 1895. 



Spirea lucida, Dougl. 



Very rare in the state. 



Teton Mountains, August 21, 1894 (No. 949). 



