422 



COMPOSITAE. 



VOL. III. 



In swamps, Newfoundland to Maine and Georgia, mainly near the coast. Races differ in leaf- 

 form and in the involucral bracts. Aug.-Oct. 



40. Aster longifolius Lam. Long-leaved 

 Aster. Fig. 4321. 



Aster longifolius Lam. Encycl. i : 306. 1783. 



Aster longifolius villicaulis A. Gray, Syn. Fl. i : Part 2, 

 189. 1884. 



Stem glabrous, or pubescent, leafy, paniculately 

 branched, i-3 high. Leaves lanceolate to linear- 

 lanceolate, entire, or nearly so, acuminate at the 

 apex, narrowed into a sessile clasping usually slightly 

 cordate base, 3'-8' long, 2" -6" wide; heads rather 

 numerous, about i' broad; involucre hemispheric, 

 4"-$" high, its bracts glabrous, narrow, green, acute, 

 imbricated in few series, nearly equal ; rays numer- 

 ous, 2j"-7" long, violet or pale purple; pappus pale. 



In swamps and moist ground, Labrador to Saskatche- 

 wan, northern New England, Ontario and Montana. 

 Summer. 



41. Aster foliaceus Lindl. Leafy-bracted 

 Aster. Fig. 4322. 



Aster foliaceus Lindl. in DC. Prodr. 5 : 228. 1835. 



Stem usually stout, sparingly pubescent in lines, 

 2-3 high, branched above, the branches ascend- 

 ing. Leaves lanceolate, acute at the apex, entire, or 

 with a few small distant teeth, glabrous on both 

 sides, very rough-margined, 2' -4' long, i'-i' wide, 

 the upper clasping at the base, the lowest petioled ; 

 heads few, i' broad or more ; involucre hemispheric, 

 its bracts green, foliaceous, oblong, the inner nar- 

 rower and acute ; rays about 30, violet, 4"~5" long ; 

 pappus nearly white; achenes pubescent. 



Mountains of Quebec ; Oregon to Alaska. July-Sept. 

 The figure of this species in our first edition was erro- 

 neously stated to have been drawn from specimens col- 

 lected in western Nebraska. 



42. Aster phyllodes Rydb. Large-bracted 

 Aster. Fig. 4323. 



Aster phyllodes Rydb. Bull. Torn Club 37 : 145. 1910. 



Stem rather slender, somewhat branched, loosely 

 pubescent, 2-3 high. Leaves oblong-lanceolate, 

 entire, or sparingly low-dentate, the larger 4' 

 long or less, i'-i' wide, acute or acutish at the 

 apex, narrowed to a subcordate and slightly 

 clasping base, rough-margined, glabrous on both 

 sides ; heads leafy-paniculate, about i' broad ; in- 

 volucre hemispheric, its bracts narrowly oblong, 

 foliaceous, acute ; rays purplish ; achenes pubes- 

 cent. 



Wet grounds, western Nebraska and eastern Colo- 

 rado. Aug.-Sept. Included in A. foliaceus Lindl. in 

 our first edition. 



