396 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Yellowstone Park: Upper Geyser Basin, Aui^. 8, 1897, Ryd- 

 he7-g c(r Bcsscy, ji2j; Mammoth Hot Springs, 1894, Burglehaiis 

 (a tall specimen with very narrow leaves) ; Upper Geyser Basin, 

 1872, Coulter. 



* Aster Oreganus Nutt. : Torr. & Gray, Fl. N. Am. 2 : 163 [ Syn. Fl. 



I": 192] ; Trlpoliiiyti Orco-anuni Nutt. Trans. Am. Phil. Soc. (II.) 

 7: 296. 



Resembles somewhat the following three species, but has nu- 

 merous small heads, 6-8 mm. high. 



Montana : Columbia Falls, Mrs. J. J. Kcnnedx, 2-j. 



* Aster Douglasii Lindl. ; DC. Prod. 5: 239 [Syn. Fl. i- : 192 : Bot. 



Cal. i: 324]. 



Resembles the next, but has more numerous and somewhat smaller 

 heads and narrowly lanceolate leaves. 



Montana: Columbia Falls, Mrs. J. J. Kennedy, 26; Smith 

 River, 1883, .S'cr/7;;;^r, go; White Gulch, Belt Mts., 1882, Canby. 



Aster foliaceus Lindl. : DC. Prod. 5: 228 [111. Fl. 3: 371; Syn. 



Fl. I-: 193; Man. R. M. 163]. 



On river-banks and wet places among bushes, at an altitude of 

 2000-2500 m. 



Montana: Madison Co., 1886, 7"zir<f^/v, //,z^ (in part) and ///p; 

 East Boulder, 1887, J JJ ; Park Co., ^jj. 



Idaho: Henry's Lake, July 31, 1897, Rxdberg & Bessev, jii6. 



Aster foliaceus Eatoni Gray, Syn. Fl. i-: 194 [Man. R. M. 164]. 

 Along streams, at an altitude of about 1500 m. 

 Montana: Box Elder Creek, 1887, R. S. Williams, 2j6a. 



Aster frondeus (Gray) Greene, Proc. Acad. Sci. Phila. 1895: 551 ; 



Aster foliaceus frondens Grav, Syn. Fl. i'- : 193 [Man. R. M. 



163]/ 



In open woods and on river-banks, at an altitude of 2000-2500 m. 



Montana: Sweet Grass Canon, 1896, Flodnian, 8jo. 



Yellowstone Park: 1884, Tweedy, ij8. 

 Aster apricus (A. Gray) ; Aster foliaceus apricus Gray, Syn. Fl. i" : 



193 [Man. R. M. 163]. 



On the highest mountains, at an altitude of 2500-3000 m. 



Montana: Yogo Baldy, 1896, Flodnian, Sj2: Park Co., 1887, 

 Tzu,-edy, 3^6. 



Yellowstone Park: 1884, Tzveedy, ijy. 



Idaho: Mt. Chauvet, July 29, 1897, Rydberg d- Besscy, 3113. 



