Rvdberg : Rocky Mountain flora 141 



imbricated in 3 or 4 unequal series and the leaves are distinctly 

 dentate and it agrees in every respect with specimens of A. panicu- 

 latus. In the writer's judgment it is nothing but the not uncom- 

 mon pinkish- or light lilac-flowered form of that species. 



Aster roseolus sp. nov. 



Perennial, with a horizontal rootstock ; stem 3-5 dm. high, 

 often purple-tinged, glabrous, pilose in lines on the branches ; 

 leaves linear, glabrous or nearly so, scabrous-ciliolate on the mar- 

 gins, 5-10 cm. long, 5-12 mm. wide, inflorescence paniculate but 

 the heads usually few ; involucres about 5 mm. high, 8-9 mm. 

 broad ; bracts glabrous, oblong or oblong-linear, acute, in about 

 3 series, often wholly green, with broadly lanceolate tips ; rays 

 rose-colored, 5-6 mm. long ; achenes hispidulous-strigose. 



This species is related to Aster longulus and A. Tradescanti, 

 but differs in the bright rose-colored rays, the less numerous heads, 

 simpler plant, and broader leaves. It grows in meadows at an alti- 

 tude of 1 500-2000 m. 



Montana: Melrose, 1895, Rvdberg- 2817 (type, in herb. N. 

 Y. Bot. Gard.); Lima, Aug. 5, 1895, Rydberg ; Logan, July 28, 

 1895, Shear 5253 ; Emigrant Gulch, Aug. 23, 1897, Rydberg & 

 Bessey 5 121. 



Aster Franklinianus Rydb. nom. nov. 



Aster salicifolius Richardson, in Frankl. Journ. 748. 1823. Not 



Aster salicifoluis Lam. 1783. 

 Aster laxiflorus Lindl. in Hook. Fl. Bor.-Am. 2 : 10, mainly. 1834. 



Not Aster laxiflorus Nees. 1833. 

 Aster laxiflorus borealis T. & G. Fl. N. Am. 2 : 1 38, in part. 1 841. 



Dr. Gray referred this to Aster jitneeus but it is more closely 

 related to A. longifolius, having the subequal bracts and the dark 

 green leaves of that species, but the bracts are narrower and 

 strictly appressed and the leaves are very narrowly linear and as 

 far as I know perfectly entire. It is A. laxiflorus of Lindley 

 mainly but he included a specimen of Mrs. Percival's from eastern 

 Canada (apparently of A. junceus), and this very specimen is the 

 type of A. laxiflorus borealis T. & G. Otherwise the species would 

 have become A. borealis Pro v., as Provancher raised the variety to 

 specific rank. He also characterized the eastern plant. The fol- 

 lowing specimens belong to A. Franklinianus : 



