370 



COMPOSITAE. 



[Vol. III. 



37. Aster junceus Ait. Rush Aster. 

 (Fig- 3771- ) 



Aslei junceus Wt.. Hort. Kew. 3: 204. 1789. 



Stem very slender, glabrous, or minutely pulxis- 

 cent above, simple or little branched. i°-3° high. 

 Leaves firm, glabrous, uarrowh- linear, entire, or 

 sometimes with a few distant teeth, acute or 

 acuminate at the apex, sessile by a broad clasping 

 and often slightly cordate base, 3'-6'long, iyi"-Y' 

 wide; heads paniculate, rather distant, about i' 

 broad; involucre hemispheric, about 3" high, its 

 bracts glabrous, linear-subulate, very acute, imbri- 

 cated in 3 or 4 series, the outer shorter; rays violet 

 to nearly white, 4"-5" long; pappus pale. 



In swamps and bogs. Nova Scotia to the Northwest 

 Territory, soutli to New Jersey, Ohio, Wisconsin and 

 in the Rocky Mountains. July-Sept. 



38. Aster adscendens Lindl. 

 Western Aster. (Fig. 3772.) 



A. adscendens Lindl. ; Hook. Fl. Bor. Am. 2: 8. 1834. 



Stem slender, rigid, glabrous, or sparingly 

 hirsute-pubescent, branched or simple, 5'-2° 

 high. Leaves firm, entire, rough-margined, 

 sometimes ciliolate, those of the stem linear- 

 lanceolate or linear-oblong, acute or obtusish, 

 i'-3' long, 2"-^" wide, sessile by a more or 

 less claspiug base ; basal leaves spatulate, nar- 

 rowed into short petioles; heads not numerous, 

 about 1' broad; involucre hemispheric, its bracts 

 imbricated in 3-5 series, oblong-linear or spatu- 

 late, their tips obtuse or obtusish, slightly 

 spreading, the inner often mucronulate; pappus 

 nearly white; acheucs pubescent. 



On prairies and moist banks, western Nebraska 

 to Wyoming, Montana and the Northwest Territorj-, 

 west to Colorado, New Mexico and Ne%'ada. July- 

 Sept. 



39. Aster Novi-Belgii L. New York 

 Aster. (Fig. 3773.) 



Asler Novi-Belgii L. Sp. PI. S77. 1753. 

 Asler longifoliiis A. Gray, Man. Ed. 5, 233. 1S67. Not 

 Lam. 17S3. 



Stem slender, usually much branched, glabrous, 

 or slightly pubescent above, \°-y' high. Leaves 

 lanceolate, obloug-lanceolatc, or linear-lanceolate, 

 firm, entire, or slightly serrate, glabrous, or very 

 nearl}' so, acuminate at the apex, narrowed, sessile 

 and more or less clasping at the base, 2'-5' long, 

 3"-S" wide, the lowest petioled; heads corymbose- 

 paniculate, usually numerous, io"-i5" broad; in- 

 volucre hemispheric, to campauulalc, its bracts lin- 

 ear, acute, green, somewhat spreading, in 3-5 

 series, the outer shorter; rays 15-25, violet, 4"-5" 

 long; pappus whitish; achenes glabrous or nearly so. 

 In swamps, Newfoundland to Maine and Georgia, 

 mainly near the coast. Aug. -Oct. 

 Aster Novi-Belgii litoreus .V. Gray, Syn. Fl. i: Part 2, 

 189. 18S4. 



Low and spreading, more or less fleshy, much branched; leaves shorter, broader, thickish, 

 acute, i'-2'A' long; principal bracts of the involucre, obtuse, loose, spatulate. Along salt-marshes, 

 Prince Edward Island and Quebec to Georgia. 



Aster Novi-Belgii elodes (T. & G. 1 A. Gray, Syn. Fl. 1: Part 2, 190. 1884. 

 Aster elodes T. & G. Fl. N. .\. 2: 136. 1841. 



Leaves narrowly linear-lanceolate, often elongated to 4-6 inches; bracts of the involucre acute. 

 In moist ground, southern New York to North Carolina. Probably specifically distinct. 



Aster Novi-Belgii Atlanticus Burgess. 

 Leaves lanceolate, tapering from the middle to an acuminate base and apex, sometimes i' wide; 



