400 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Yellowstone Park: 1884, Tzvecdy, i2j, 12^ and /^j; Electric 

 Peak, Aug. 18, 1897, Rvdberg & Bessey, 5/0^. 



Erigeron salsuginosus glacialis (Nutt.) Gray, Syn. Fl. i- : 209 

 [Man. R. M. 169] ; Aster glacialis Nutt. Trans. Am. Phil. Soc. 

 (II.) 7: 291. 

 Montana: Silver Bow Co., Mrs. Jennie H. Moore. 



* Erigeron Howellii Gray, Syn. Fl. i" : 20(^\ Erigeron salsuginosus 



Ilozuellii Gray , Proc. Am. Acad. 16: 93. 



Like E. salsuginosus, but with larger heads, broader ra3'^s, and 

 broader thin leaves, of which the basal ones are spatulate and the 

 upper cauline, ovate and clasping. It grows in mountain meadows, 

 at an altitude of 2500 m. 



Montana: Upper Marias Pass, 1883, Canhy, 180. 



Yellowstone Park: East De Lacy's Creek, Aug. 10, 1897, 

 Rydberg & Bessey, 5/0/. 



Erigeron macranthus Nutt. Trans. Am. Phil. Soc. (II.) 7: 310 [Syn. 



Fl. I-: 209; Man. R. M. 169]. 



In meadows, at an altitude of 1000-2500 m. 



Montana: Columbia Falls, vl/r^. J. J. Kennedy, 22 and j^; 

 Lima, 1895, Rydberg, 282^; Gallatin Co., 1886, Txveedy, 11 42; 

 Beaver Head Co., 1888, 2J2; Indian Creek, July 21, 1897, Ryd- 

 berg & Bessey, sogg; Great Falls, 1888, R. S. Williams, jj ; Belt 

 Mountains, 1883, Scribner, loi ; Little Belt Mts., 1896, Flodman^ 

 8§i ; Spanish Basin, 8^2. 



Yellowstone Park : 1884, Tzveedy, ij6. 



* Erigeron speciosus DC. Prod. 5: 284 [Syn. Fl. i- : 209; Bot. 



Cal. i: 330]. 



Resembles E. macranthus in habit, but the involucre is hirsute- 

 pubescent. It grows in mountain meadows, at an altitude of 2000— 

 2500 m. 



Montana : Silver Bow Co., Mrs. Jennie H. Moore; Forks of the 

 Madison, July 26, 1897, Rydberg & Bessey, 5/00; Helena, 1892, 

 F. D. Kelsey; Big Blackfoot, 1883, Catiby, 185; Litde Belt Mts., 

 1896, Flodman, 84g; Spanish Basin, 8^0; Bitter Root Valley, 

 1880, Watson. 



* Erigeron conspicuus. 



Stem from a woody base, 3-5 dm. high, strict, hirsute with rather 

 long white hairs, leafy to the top ; lower leaves oblanceolate, 5-10 



