

468 SYNGENESIA [Astbhoh,,* 



linear, cuspidate, entire. Heads of flowers middle-sized, paniculate, the panicle 

 often somewhat corymbose ; branches and pedicels angular, pilose on the angles- 

 involucre smoothish, the leaflets lauce-lintar, acute, minutely pubescent-ciliate' 

 the apex often spreading, or recurved; rays pale bluish-purple; disk yellowish' 

 finally purplish- brown. Akenes pubescent. 



Hab. Margins of swampy rivulets : frequent. Fl. September. Pr. October. 



Obs. Collected by D. Townsend, Esq. in 1833. The plant called " A. salicifo. 

 lius ? " in my Catalogue, turned out, as I suspected at the time, to be nothing but 

 A. atnygdulinus, Lam. {Diplopapjms amygdalinus, of the present work). 



13. A. ljkvis, L. Stem smooth, corymbose-paniculate at summit* 

 leaves linear-lanceolate and lance-oblong, entire, or sub-serrate, suban> 

 plexicaul, coriaceous, smooth and shining ; involucre imbricate, the 

 leaflets oblong, keeled, acute, green and thickish at apex. Heck, Bot 

 />. 185. 



A. Iffivigatus. FloruL Cestr. p. 90. Also? fVilld. and others. 

 JllsOy A. concinnus. FloruL Cestr. p. 91. Not? of Jt'ilUL &?c. 

 Smooth, or Polished Aster. 



Stem 2 to 3 feet high, smooth, often dark purple, especially near the base, more 

 or less branched at summit. Radical leaves 1 or 2 to 4 inches long, and 3 fourths 

 of an inch to 2 inches wide, oval and spatulate-ovate, or oblong, obscurely cren. 

 ate serrate, smooth, scabrous on the margin, narrowed to a margined petiole about 

 as long as the leaf; stem-leaves 2 to 5 inches long, and 1 third of an inch to an 

 inch and half wide, sessile, subamplexicaul, varying from lance-linear to oblone 

 and ovate-lauceolate, entire and somewhat revolute on the margin, or sparinelv 

 inciscd-serratc, coriaceous, smooth and shining green,— the broader leaves often 

 abruptly narrowed at base to a margined petiole, and sometimes inclining to pan- 

 duriform ; the brunch-leaves mostly numerous, small, oblong. Heads of floweri 

 large, more or less corymbose-paniculate ; involucre smooth, the leaflets white 

 with green keel and apex, acute, or acuminate, minutely ciliate ; rays long, 

 mostly deep violet-purple, sometimes paler ; disk yellow. Akenes ribbed, smooth 

 ish. 



Hab. Borders of woodlands, and thickets : frequent. FY. Aug— Sept. Fr. Octo. 



Obs. This is a handsome plant. I have specimens which answer well to the 

 descriptions both of A. Uevis % and A. lavigatus, of Authors ; but there are inter- 

 mediate ones which appear to connect them very intimately : and I am not with. 

 out suspicions that A. amplexicaulis, A. mutabilis, A. rubricaulis, A. cyaneus, and 

 perhaps one or two others, are too nearly akin to this. A. concinnus, of my Cata- 

 logue, belongs also to this species. The U. States are the principal region of 

 Asters,— -in which are enumerated some 60 or 65 additional species, —even as the 

 genus is now restricted ; though it is probable a number of them ate mere varittiti. 



375. EURYBIA. Cass. JSTees, Ast. p. 136. 

 [Perhaps from the Gr. Eurybias, broad or wide spreading ; in allusion to the leaves.] 



Heads many-flowered. Involucre subcylindric, with the leaflets closely 

 imbricated, broadish, membranaccously margined, the herbaceous disk 

 at apex narrow. Florets of the disk with the tube and limb distinct. 

 Pappus simple, stiflish, scabrous, persistent. Akenes elongated, sub* 

 linear, 3 to 5 ribbed, striate, smooth, or slightly pubescent. Recepta- 

 cle alveolate. 



