(.22 



COMPi ISITAE. 



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. 1 : Part 2, 

 [89. [884. 



Stern glabrous, or pubescent, leafy, paniculately 

 branched, l-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 1' broad; involucre hemispheric, 

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

 imbricated in few series, nearly equal; rays numer- 

 ous, 2V-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'-^' long, l'-i' wide, 

 the upper clasping at the base, the lowest petioled ; 

 heads few, 1' broad or more; involucre hemispheric, 

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

 rower and acute ; rays about 30, violet, 4"-S" 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. Torr. Club 37 : 145. >9io. 



Stem rather slender, somewhat branched, loosely 

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

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

 long or less, t'-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 1' 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. 



