First Report on the Flora of Wyoming. 129 



Erigeron compositus, Pursh, Fl. ii, 535 (1814). 



Observed only on a clayey, gravelly ridge at the head of Pole- 

 Creek, May 12, 1804 (No. 2(i); May 18, 1895 (No. 1217). 

 Erigeron compositus pinnatisectus, Gray, Proc. Am. Acad, xvi, 90 

 (I8SO). 



In the Medicine Bow Mountains only as yet, 10,000 ft. and 

 upward. 



La Plata Mines, August 23, 1895 (No. 1816). 

 Erigeron trifidus, Hook. Fl. Bor. Am. ii, 17 (1834). 



Near the summit of Laramie Peak, August 7, 1895 (No. 1612). 

 Erigeron corymbosus, Nutt. Trans. Am. Phil. Soc. vii. 308 (1841). 



This fine mountain form is cjuite variable as to the number of 

 heads. In three specimens from different localities I find the stems 

 unicephalous, while only one has the typical corymbose arrange- 

 ment. 



Telephone Canon, June 15, 1894 (No. 234); Platte Hills, July 24, 

 1894 (No. 633); Union Pass, August 10, 1894 (No. 859); Centen- 

 nial Hills, June 9, 1895 (No. 1290). 

 Erigeron Coulteri, Porter, in Fl. of Colo., (il. 



Just a few fine specimens secured at Cummins, July 28, 1895 (No. 

 1524). 

 Erigeron divergens, T. & G. Fl. ii, 175 (1841). 

 Widely distributed, but not common. 

 Fine specimens from Snake River, Jackson's Hole, August 22, 



1894 (No. 1053). Larger and more divergently branched plants 

 from subalpine slopes on Laramie Peak, August 6, 1895 (No. 1635). 



Erigeron flagellaris, Gray Mem. Am. Acad, iv, 68 (1849). 



Immature and mature specimens present a very different appear- 

 ance on account of the great lengthening of the stems without a 

 corresponding increase in the number of leaves. Table Mountain, 

 June 30, 1895 (No. 1386); Laramie Peak, August 6, 1895 (No. 

 1600). 

 Erigeron glabellus, Nutt. Gen. ii, 147 (1818). E. aspems, Nutt. 



Our commonest Erigeron, everywhere abundant in wet meadows, 

 somewhat variable. 



Lander Creek, August 29. 1894 (No. 1117); Cummins, July 30, 



1895 (Nos. 1454 and 1536). Specimens from several other locah- 

 ties. 



