348 COMPOSlTiE. Aster. 



ttttin Heads (large and shmvy) terminating the corymbose or paniculate branches : scales of t!te involucre numei'ons, in 

 several series, somewhat equal, the elongated foUacemts jmiiion spreading or squarrose : achenia vilknis : rays numerous, 

 purple or violet : leaves lanceolate or linear-oblong, mostly entire, sessile, often partly clasping : branchkts and involucre 

 glandular or glandular-pubescent. 



22. Aster NoViE-ANGLi^, Linn. New-England Aster. 



Stem stout, hispid, corymbose at the summit ; the branchlets and involucre somewhat 

 viscid; leaves very numerous, linear-lanceolate, auriculate-clasping, entire, roughish-pubescent; 

 scales of the involucre subulate-linear, glandularly viscid, loose, nearly equal, as long as the 

 disk.— Lim. sp. 2.p. 875; Michx.Jl. 2. p. 113; Pursh,fl. 2. p.bAQ ; Nutt. gen 2. p. 156; 

 Ell. sk. 2. p. 351 ; Lindl. hot. reg. t. 183 ; Bigel.fl. Bost. p. 310 ; Nees, Ast. p. 46 ; Hook. 

 Jl. Bor.-Am. 2. p. 8 ; Beck, hot. p. 182 ; Darlingt.fl. Cest. p. 462 ; DC. prodr. 5. p. 233; 

 Torr. 4- Gr. Jl. N. Am. 2. p. 144. A. amplexicaulis. Lam. diet. 1. p. 304, not of Willd. 

 A. spurius, Willd. sp. 3. p. 2032. 



Stem 3-6 feet high, often brownish purple, clothed with white spreading hairs, and the 

 upper part somewhat viscid with a terebinthine secretion. Leaves 2-4 inches long and 

 4-6 lines wide, gradually tapering to the summit, the auriculate base folding round the stem. 

 Heads (including the rays) more than an inch and a half in diameter, arranged in a loose 

 more or less compound thyrsus or corymb. Involucre liemisphcrical ; the scales very narrow, 

 glandularly rough and viscid, more or less tinged with brownish-purple. Rays very numerous 

 (40 or more), bright violet-purple : disk-flowers yellow, becoming purplish when old. Achenia 

 very hairy. Pappus rather rigid, dirty reddish-white. 



Low grounds, borders of fields, etc., sometimes in rather dry situations ; common. Sep- 

 tember - October. This is one of the handsomest species of the genus, and also one of the 

 easiest to be recognized. 



& 4. Orthomeris, Torr. & Gr. Scales of the regularly imbricated involucre tcith membranaceous 

 or scarious margins, destitute of herbaceous tips or appendages, often carinaie, mostly unequal: 

 appendages of the style lanceolate, sometimes oblong or triangular: receptacle alveolate {flat): 

 bristles of the pappus capillary, usually unequal. 



23. Aster acuminatus, Michx. Acuminate Aster. 



Stem simple, flexuous, pubescent, roughish, loosely and paniculately corymbose at the 

 summit ; peduncles slender, naked ; leaves broadly cuneiform-lanceolate, membranaceous, 

 conspicuously acuminate, coarsely dentate-serrate above, the narrowed base entire, smooth 

 above, more or less pubescent underneath ; scales of the involucre linear, loosely imbricated, 

 acuminate ; achenia glandular. — Michx.Jl. 2. p. 109 ; Pursh, Jl. 2. p. 555 ; Bigel.Jl. Bost. 

 p. 312 ; Hook. hot. mag. t. 2707, and Jl. Bor.-Am. 2 p. 9, not of Nees ; Beck, hot. p. 184 ; 

 Torr. <^ Gr. Jl. N. Am. 2. p. 157. A. diifusus, var. acuminatus, Pers. syn. 2. p. 447. 

 Diploslcphium acuminatum, DC. prodr. 5. p. 273. 



