140 RYDBERG: Rocky MOUNTAIN FLORA 
ALBERTA: Field, Aug. 28, 1904, /. Macoun 65485. 
British CotumstA: Flood plains of Columbia at Beavermouth, 
Aug. 18, 1905, C. H. Shaw 1165; Armstrong, 1904, £. 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, 5-10 cm. long, narrowly linear, 6-7 mm 
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 Geyerias A. virgatus and A. concinnus do to A. laevis. It 
has the narrow green tips of the bracts found in A. Geyer? 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. 
Cotorapo: Glenwood Springs, Aug. 18, 1906, G. &. Oster- 
hout 3397 (type, in herb. N. Y. Bot. Gard.). 
Aster Wooroni! Greene, Leaflets 1: 146. 1905. 
Aster hesperius Wootonit 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 8r7 and 
Wooten 329, the latter the type of A. hesperius Wootonit. Thetwo 
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 1158, which number I take to 
be the type of A. hesperius. In the former the bracts are well 
