146 Wj/oining^ Experiment Station. 



Taraxacum officinale alpinum, Koch. Fl, Germ. & Helv. 428 (1837). 



Of the several forms of native Dandelions this seems to be the 

 most frequent. Abundant in the high, grassy valleys of the Lara- 

 mie range. 



Pole Creek, June 2, 189J (No. 109); Centennial Valley, August 

 17, 1895 (No. 1715). 



Taraxacum officinale lividum, (?) Koch. 



Some specimens collected by B. C. Buffum, 1892, are doubtfully 

 placed here, and some with nearly entire glaucesent leaves are for 

 the present passed over. 



Lactuca leucophaea, Gray, Proc. Am. Acad, xix, 73. 

 Probably very rare in the state. 

 Centennial Valley, August 16, 1895 (No. 1674). 



Laetuca Ludoviciana, DC. Prodr. vii, 141 (1838). 



Rare ; possibly confined to the eastern part of the state. 

 Laramie Peak, August 7, 1895 (No. 1596). 



Lactuca pulchella, D C. Prodr. vii, 134 (1838). 

 Very frequent in the fertile soil of valleys. 



Blue Grass Creek, July 13, 1894 (No. 445); Laramie, September 

 16, 1894 (No. 1146). 



Sonchus asper, (L.) All. Fl. Ped. i, 222 (1785). 



This has found its way into several parts of the state ; Lander, 

 August 3, 1894 (No. 872); Evanston, September 1, 1894, sent by 

 Dr. Solier 

 Lygodesmia grandiflora, T. & G. Fl. ii, 485. 



Very rare ; some specimens by B. C. Buffum from near Tie 

 Siding, July 18, 1891. 



Lygodesmia juncea, Don. Edinb. Phil. Journ. vi, 311 (1829). 

 A " weedy " plant very common on the Laramie Plains. 

 University campus, September 26, 1894 (No. 1165). Skeleton 

 Weed. 

 Stephanomeria minor, Nutt. Trans. Am. Phil. Soc. (II) vii, 427 (1841). 

 Ptitoria tenidfolia, (Torr.) Raf. 



Probably not rare, though observed but twice. 

 Gros Ventre Hills, August 16, 1894 (No. 925); also a small form 

 of it from Laramie Peak, August 24, 1895 (No. 1624). 



