Rydberg : Rocky Mountain flora 145 



This species is intermediate between A. oregamis Nutt. and A. 

 proxwms Greene. It has often been mistaken for the former, as 

 it has the same narrow leaves and general habit, but differs in the 

 involucre, which is essentially that of A. proxinius, consisting of 

 foliaceous oblanceolate outer bracts and shorter merely green- 

 tipped inner ones ; but the bracts are less squamose and the leaves 

 much narrower, darker in color, and firmer. 



Wyoming: Mammoth Hot Springs, Oct. ii, 1902, Meanis 

 4806 (type, in herb. N. Y, Bot. Gard.) ; same locality and col- 

 lector, Aug. 2, <?7j/ (?); Aug. 17, 33go; Gardiner River, Sept. 1 1, 

 1902, Mearns jgi^ ; Mt. Leidy, Aug., 1897, Tzveedy 361. 



Montana: Bozeman, Aug. 24, 1892, Kelsey ; near Rost 

 Lake, Aug., 1901, MacDoiigal 88ja ; Belt River, Oct., 1883, F. 

 W. Anderson j8ojv. 



Saskatchewan: Cypress Hills, Aug. 5, 1880,/. Macoiin 7C}j8. 



Alberta : Crows Nest Pass, July 31, 1897, J. Maconn 23076 ; 

 overflow from Middle Spring, Banff, July 16, 1899, Sanson 224.1 ; 

 Banff, Sept. 24, 1904,/. Maconn 63486. 



Aster phyllodes sp. nov. 



Aster foliaceus Britt. & Brown, 111. Fl. 3: 371 (excluding figure). 



1898. ^oX. A. foliaceus \An^\. 1835. 



The plant described in Britton & Brown's Illustrated Flora is 

 not Aster foliacetis Lindl. of the Northwest, which is a simple 

 plant, with 1-3 large heads and narrowly linear-lanceolate leaves. 

 The figure in the Illustrated Flora was not drawn from my 

 Kimball County plant as stated there. It probably does not rep- 

 resent an Aster at all. Evidently some illustrations have been 

 interchanged. The Nebraska plant is nearer to A. pnniceus in habit 

 than to A. foliaceus, although the pubescence and bracts approach 

 the latter. It is more closely related to A. proximus Greene, but 

 differs in the more or less toothed and more distinctly auriculate, 

 darker leaves. 



The only specimens seen are the following : 



Nebraska : Lodge Pole Creek, near Kimball, Kimball County, 

 Aug. 12, 1 89 1, Rydberg 163 (type). 



Colorado : West of Livermore, Larimer Co., Aug. 26, 1896, 

 Osterhout 2^33. 



