Aithoibis] SYNGENES1A 461 



Also, S, axillaris. Pursh, Am. 2. p. 542. Lindl. Ency. p. 712. 



Beck, Bot. p. 193. Eat. Man. p. 349. 



Gre*-blue Solidago. Vulgd — Blue-stemmed Golden Rod. 



Stem 1 to 2 or 3 feet high, slender, nearly straight, simple, or sometimes con- 

 siderably branched, terete, very smooth, mostly dark purple, and withal of a 

 glaucous hue. Leaves an inch and half to 3 or 4 inches long, and 1 third of an 

 inch to an inch wide, oblong-lanceolate, acuminate, irregularly serrate, smooth 

 on both sides, scabrous on the margin, subsessile. Heads of flowers middle-sized, 

 in numerous axillary and mostly subglobose clusters (sometimes in oblong 

 racemes); branches and pedicels pubescent; bracts subulate; involucre smooth - 

 |fb, the leaflets oblong, rather obtuse, minutely pubescent-ciliate on the margin ; 

 rays middle-sized. Akenes pubescent. 



ffab. Woodlands, and thickets: common. Fl. September. Fr. October. 



Obs. This is undoubtedly allied to the preceding,— and Prof. Hooker has united 

 them; but I am inclined to think they may, with propriety, be continued as dis- 

 tinctspecies. If, however, they should finally be reduced to one, it will then pre- 

 gent three strongly-marked varieties,— somewhat as Michaux has given them. 



§ 2. Receptacle bristly-paleaceous. 



16. S. lasteolata, Mt. Stem roughish-pubescent, corymboscly 



branched ; leaves lance-linear, very entire, 3-nerved, somewhat scabrous ; 



corymbs terminal, fastigiate ; heads clustered. Beck, Bot. p. 194. 



var. major. Jtfx. Am. 2. p. 116. 



S. graminifolia. Ell. Sk. 2. p. 391. Eat. Man. p. 347. 



Euthamia graminifolia. JYutt. Gen. 2. p. 162, 



Lanceolate Solidago. 



Stem 2 to 4 feet high, angular-striate, with green and yellow strips, roughish" 

 pubescent (glabrous, Willd. Digel. Hook. &c), corymboscly branched at summit. 

 Leaves 2 or 3 to 5 inches long, and 2 or 3 lines to half an inch wide, acute, sessile 

 3- or often somewhat 5-ncrved, slightly pubescent, scabrous on the margin and 

 nerves. Heads of flowers rather large, aggregated in clusters at the summit of 

 the corymbose branches ; bracts ovate-lanceolate, ciliate ; involucre smoothish 

 shining and slightly viscid, the leaflets lance-oblong, rather obtuse, appressed 

 deeper green at apex : rays rather small. Akenes pubescent. 



Hob. Moist, low grounds ; borders of thickets: frequenu Fl. Aug. Fr. Octo. 



Obs. About 35 additional species, of this formidable genus, have been enumer- 

 ated in the U. Stales ; some of which, however, are scarcely more than varieties. 



374. ASTER. L. JsTutt. Gen. 659. 

 [Greek, Aster, a star ; the radiated heads of flowers resembling stars.] 



Heads many-flowered. Involucre with the leaflets loose and foliaceous 

 or imbricated, more or less membranaceous and whitish at base and 

 with a rhomboid herbaceous disk, or green spot, near the apex. Flo- 

 rets of the ray numerous, in a single series, pistillate, — of the disk 

 perfect Pappus simple, scabrous, persistent Akenes subcompre*- 

 sed, cuneate, mostly pubescent. Receptacle alveolate. Root peren- 

 nial ; leaves alternate, varying from oblong to linear, sometimes ' 

 •ordate; inflorescence generally corymbose-paniculate / florets of t/ie 

 ray never yellow. 



39* 



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