Genus 3r.] 



THISTLE FAMILY. 



377 



Aster dumosus coridifolius (Michx.) T. & G. Fl. N. A. 2: 128. 1841. 

 Aster coridifolius Michx.; Willd. Sp. PI. 3. 2028. 1804. 



More rigid and stouter; branchlets elongated; bracts of the involucre coriaceous; leaves of the 



branches small and numerous, very close, divergent. Pine-barrens, Martha's Vineyard to Florida. 



Aster dumosus strictior T. & G. Fl. N. A. 2: 128. 1841. 



Stem sparingly branched, the branches ascending, terminated by rather larger heads; leaves 



sessile by a broad base, acuminate, mostly quite entire. Swamps, Massachusetts to New Jersey, 



Pennsylvania and Maryland. 



58. Aster salicifolius L,am. Willow Aster. (Fig. 3792.) 



Aster salici/olius ~Lfl.ro.. Encycl. 1: 306. 1783. 

 Aster car neasT. & G. Fl. N. A. 2: 133. 1841. 



Stem rather slender, paniculately much branch- 

 ed, usually very leafy, 2-5 high, glabrous, or 

 somewhat pubescent above. Leaves firm, lan- 

 ceolate or linear-lanceolate, rough-margined, 

 acute or acuminate at the apex, narrowed and 

 sessile or slightly clasping at the base, entire or 

 sparingly dentate with low teeth, glabrous or 

 nearly so, 2 / -4 / long, 2 // -6 // wide, the lowest 

 sometimes petioled, those of the branches grad- 

 ually smaller; heads numerous, S // -I2 // broad; 

 involucre broadly turbinate, its bracts linear-ob- 

 long, appressed, imbricated in 4 or 5 series, their 

 green tips acute or obtusish; rays numerous, vio- 

 let, or violet-purple, or sometimes white, 3 // -4 // 

 long; pappus white; acheues minutely pubescent. 



In moist soil, Maine and Ontario to Massachusetts 

 and Florida, west to Montana, Missouri and Texas. 

 Intergrades with A. paniculatus. Aug. -Oct. 



Aster salicifolius subasper (Lindl. ) A. Gray, Syn. 



Fl. 1: Part 2: 188. 1884. 



Aster subasper Lindl. Comp. Bot. Mag. 1: 97. 1835. 



Stem scabrous; leaves more or less so. Indiana to Missouri and Texas. 

 Aster salicifolius stenophyllus (Lindl.) Burgess. 

 Aster stenophyllus Lindl., DC. Prodr. 5: 242. 1836. 



Leaves narrowly linear-lanceolate, small, those of the branches numerous and minute; bracts 

 of the involucre linear-subulate. Southern New York and eastern Pennsylvania to Virginia. 



59. Aster paniculatus L,am. Tall White or Panicled Aster. (Fig. 3793.) 



Aster paniculatus Lam. Encycl. 1: 306. 1783. 



Stem glabrous or nearly so, paniculately much 

 branched, 2-8 high. Leaves lanceolate to 

 oblong-lanceolate, acuminate at the apex, nar- 

 rowed to a sessile or slightly clasping base, 

 glabrous, usually thin, roughish-margined, those 

 of the stem sparingly serrate in the middle, or 

 sometimes very nearly entire, 3 / -6 / long, 3 // -6 // 

 wide, the upper and those of the branches grad- 

 ually smaller; heads numerous, S^-io" broad; 

 involucre nearly hemispheric, 3 // -4 // high, its 

 bracts narrowly linear-lanceolate, acute or 

 acuminate, appressed, green-tipped, imbricated 

 in 4 or 5 series; rays numerous, white, or faintly 

 tinged with violet, 3 // -4 // long; pappus white 

 or nearly so; achenes minutely pubescent. 



In moist soil, New Brunswick to western Ontario 

 and Montana, south to New Jersey, Virginia, Ken- 

 tucky, Louisiana and Missouri. Aug. -Oct. 



Aster paniculatus bellidiflorus (Willd.) Burgess. 

 Aster bellidiflorus Willd. Enum. 886. 1809. 

 Aster tenuifolius var. bellidiflorus T. & G. Fl. N. 

 A. 2: 132. 1841. 



Leaves narrowly linear, acuminate at both ends, entire, or remotely appressed-serrate, chiefly 

 4' long by 3" wide, or less; heads numerous, rather densely clustered on the ascending branches of 

 the large panicle. In moist or wet soil, in open situations, New Brunswick to western Ontario, North 

 Carolina, Missouri and Kansas. 



Aster paniculatus simplex (Willd.) Burgess. 

 Aster^simplex Willd. Enum. 887. 1809. 



Leaves oblong-lanceolate to oblanceolate, thin, long-acuminate at both ends, the larger often 

 8' long and 1'wide, sparingly serrate with low teeth; inflorescence leafy, the heads less showy than 

 in the preceding. In shaded moist places, Massachusetts to Ohio, Virginia and Kentucky. 



