146 COMPOSITE. Solidago. 



larger than in the preceding (3 Hues long), usually more spicately clustered and with more 

 numerous flowers (rays about 8): involucre of more imbricated and broader very obtuse 

 narrowly oblong bracts, externally granular-puberulent when young : akenes canesceutly 

 hirsute. Chapm. Fl. 209. -S. ambujua, var. ? lunci folia, Torr. & Gray, Fl. ii. 200. Damp 

 woods of the higher Alleghauies in N. Carolina and Tennessee ; first coll. by Curtis. 

 S Curtisii TOUR. & GRAY. Glabrous or somewhat pubescent : stem commonly branching, 

 'slender moderately angled, 2 feet high : leaves from oblong to elongated-lanceolate, with 

 gradually attenuate entire base, subsessile, serrate with ascending subulate teeth, 3 to 5 

 inches Ion" : heads in looser clusters, smaller and fewer-flowered (rays 4 to 7) : bracts of the 

 involucre much fewer, linear, obtuse. Fl. ii. 200 (excl. var.); Chapm. 1. c. S. jiexi- 

 caulis, in part, in herb. Michx. Open woods, mountains of Virginia to Georgia, at low or 

 moderate elevations ; first coll. by Michaux, next by Curtis. 



Var. pubens, GRAY, 1. c. From sparsely to somewhat densely pubescent : leaves 

 from ovate with tapering base to lanceolate. S. pulens, M. A. Curtis in Torr. & Gray, 

 Fl. ii. 198; Chapm. 1. c. Common in the mountains of Carolina, Tennessee, and Georgia; 

 first coll. by Curtis. 



-1- H- Akenes glabrous: inflorescence less axillary-clustered, more virgately thyrsoid. 

 S. monticola, TORR. & GRAY. Nearly glabrous : stem slender, a foot or two high : leaves 

 'from oblong-ovate to oblong-lanceolate, thinnish, acuminate or acute at both ends, 1 to 4 

 inches long 5 ; the lower rather sparingly serrate with acute teeth: heads small: involucral 

 bracts linear, acutish : rays 5 or 6, yellow. Chapm. Fl. 209. S. Curtisii, var. 'i monticola, 

 Torr. & Gray, Fl. ii. 200. Alleghany Mountains, from Maryland to Georgia and Alabama; 

 first coll. by Curtis. 



S. bicolor, L. Fuberulent, commonly cinereous : stem often hirsute below, strict, a foot to 

 a yard (rarelv a span) high: leaves oblong or the lower obovate and ovate, short, mostly 

 obtuse ; lower slightly or obtusely serrate : clusters crowded in a simple or compound often 

 elongated thyrsus : involucral bracts linear-oblong, very obtuse : rays from 5 to 14, small, 

 white, and the disk-corollas also white or yellowish. Maut. 114; Ait. Kew. iii. 210; Torr. & 

 Gray, Fl. ii. 197. S. alba, Mill. Diet. Vin/a-aurea flore albo, etc., Pluk. Aim. t. 114, fig. 8. 

 S. viminea, Bosc in herb. Foiret, therefore S. erecta, DC. Prodr. v. 340. Ast-.r bicoior, Nees, 

 Ast. 283. Dry ground, Nova Scotia to Virginia and the upper part of Georgia. 



Var. concolor, TORR. & GRAY, 1. c. Flowers both of ray and disk yellow (or some 

 ravs yellow, others white) : foliage sometimes greener, sometimes lauate-hirsute. S. his/nda, 

 Muli'l. in Willd. Spec. iii. 2063. S. hirsuta, Nutt. in Jour. Acad. Philad. vii. 103, & Trans. 

 Am. Phil. Soc. n. ser. vii. 327. New Brunswick and Maine to Lake Superior, Missouri, and 

 Tennessee. 



Var. lanata, GRAY, 1. c. Low, villous-lanate : heads simply spicately crowded at the 

 summit of the stem or branches. S. lanata, Hook. Fl. ii. 4. Plains of the Saskatchewan 

 toward the Rocky Mountains, Drummond. 



* * * Heads mostly large for the genus (in some and seldom less than 4 lines long, smaller 

 in forms of S. humilis, &c.), many-flowered, collected in thyrsoidal inflorescence which is not at 

 all secund nor strictly racemiform (but in two species approaches corymbiform) : rays 6 to 14: 

 leaves veiny from a simple midrib, in most species bright green: stems commonly low or not 

 tall. (From the inflorescence a few other species, such as S. speciosa, might be sought here.) 



TlIYKSIFLOK^E. 



-1 Southwestern species, fully 2 feet high: leaves very numerous up to or into the inflorescence, 

 uniform in size and shape, short (inch or two long), closely sessile, of rather firm texture, en- 

 tire, rough-margined, somewhat scabrous: pubescence minute and somewhat cinereous : heads 

 4 lines lung: bracts of the involucre narrow, obtusish, or in some acute. 



S. Bigelovii, GRAY. Cinereous-puberulent : leaves oval and oblong, mostly obtuse at both 

 cmls and hispidulons on the margin: thyrsus simple or compound, rather dense or at 

 length open : involucre broadly campanulate, puberulent : akenes minutely pubescent or 

 glabrate. Proc. Am. Acad. xvi. 80, xvii. 190. S. petiolaris, Gray in Bot. Mex. Bound. 79, 

 not Ait. Mountains of New Mexico and Arizona, Bigclow, Wright, Parry, Greene, Lcmmon. 

 (Adj. Mex.) 



Var. Wrightii, GRAY, 1. c. Leaves sometimes narrower: thyrsus simple and short, 

 of comparatively few heads, or corymbiform almost in the manner of the Corymbosce. 



