140 Rydberg : Rocky Mountain flora 



Alberta: Field, Aug. 28, 1904,/. Macoun 65485. 



British Columbia : Flood plains of Columbia at Beavermouth, 

 Aug. 18, 1905, C. H. Shaw 1165 ; Armstrong, 1904, E. Wilson 

 422 (?); Emerald Lake, Aug. 30, 1904, /. Macoun 65488 (in part). 



Aster subsalignus sp. nov. 



Perennial, with a rootstock ; stem glabrous throughout, 6-10 

 dm. high ; leaves nearly erect, glabrous, glaucous, entire, clasping 

 but scarcely auricled, 5-1 cm. long, narrowly linear, 6-7 mm. 

 wide, or the lower narrowly linear-oblanceolate, or those of the 

 branches lance-linear and reduced ; inflorescence paniculate ; invo- 

 lucres about 7 mm. high and 8 mm. wide ; bracts linear or the 

 outer linear-lanceolate, glabrous, acute, with a green midrib and 

 narrowly lanceolate green tip, or the outer nearly wholly green ; 

 rays bluish or bluish purple, about 8 mm. long ; achenes glabrous ; 

 pappus tawny ; disk-flowers dark, red-purple. 



This is related to Aster Geyeri, but differs in the narrow leaves, 

 scarcely auricled at the base ; they are also more erect or strongly 

 ascending and wholly entire. It stands in the same relation to 

 Aster Geyeri as A. virgatus and A. concinnus do to A. laevis. It 

 has the narrow green tips of the bracts found in A. Geyeri but not 

 in the others. The spreading branches of the inflorescence with 

 their very small bract-like leaves characteristic of the three are not 

 found in this species, and scarcely in A. Geyeri. 



Colorado: Glenwood Springs, Aug. 18, 1906, G. E. Oster- 

 hout JJ97 (type, in herb. N. Y. Bot. Gard.). 



Aster Wootonii Greene, Leaflets 1 : 146. 1905. 



Aster hesperius Wootonii Greene, Bull. Torrey Club 25 : 119. 1898. 

 In raising the variety to specific rank, Dr. Greene stated : " Mr. 

 Baker's n. 817 from near Gunnison represents well that of Mr. 

 Wooton's distribution from New Mexico, and I judge the form 

 worthy of specific rank." In the herbarium of the New York 

 Botanical Garden there are duplicates of both Baker 8ij and 

 Wooton J29, the latter the type of A. hesperius Wootonii. The two 

 are not the same. The latter has the subequal loose bracts and 

 entire leaves of A. hesperius, and is best referred to that species ; in 

 fact it matches very closely Wright 11 58, which number I take to 

 be the type of A. hesperius. In the former the bracts are well 



