430 Oedke 10.— composite. 



ened into awns. — 21 Glabrous, branching herbs. Lvs. lanceolate, en- 

 tire, sessile. Hds. loosely corymbous. Kays purplish-white. 



1 B. glastlfolia L'Her. Lvs. linoar-lanceolate, narrowed to the base, the lowest 

 serrate ; hds. on slender peduncles in a loose paniculate corymb ; ach. obovate, 

 smooth, vfith 2 awns nearly Us length and several very minuto S6ta3 between. — A 

 very slender plant 3 to 7f, between Aster and Erigeron, in prairies, &c. Can. IV. 

 to Ga. and La. St. strict, gi'een. Lvs. 3 to 5' long, the upper setaceous. Rays 

 about 30, Bpreading 1 to 9". JL, Aug. 



2 B. diflFCiBa Ell. Los. linear-lanceolate and linear-subulate, oil entire ; hds. 

 small, in a diffusa panicle with very numerous and slender branchlets ; ach. 

 obovate, narrowly winged, with 2 awns less than h-alf its length, and several very 

 minuto seta; between. — Ga. to La., common. A very slender and diffusely 

 branched plant, 3 to W higK Rays spreading about 5". Aug. — Oct. 



3 B. asteroides L'Her. I/os. kmceokUe, all entire; hds. in a somewhat con- 

 densed corymb, on long peduncles ; branches leafy ; ach. broadly oval, smooth, 

 with 4 to 5 minute set^, none of them produced into avjns. — Margins of swamps, 

 Penn. to Ga. Plant 1 to 3f high. Rays 13 to 20, spreading 6 to 7". Aug., 

 Sept. 



25. BRACHYCH.ffi^TA, Torr. & Gr. False Solidago. (Gr. /3po;^f , 

 short, ^am;, hair ; in reference to the pappus.) Heads few-flowered; 

 rays 4 or 5, $ , ligulate ; disk-fiowers 4 or 5, i^ , tubular ; involucre 

 cylindric, imbricate ; receptacle nated ; pappus a single row of scale- 

 like bristles shorter than the obconio achenium. — 2[ Habit that of a 

 Solidago. The golden yellow heads arranged in little clusters, forming 

 one or several unilateral, recurved racemes. 



B. cordata Torr. & Gr., "Woods, E. Ky. (near Cumberland Gap) to Ga., along the 

 rats. St. 2 to 4f high, simple or with several branches above, pubescent. Lvs. 

 altei-nate, cordate, ovate, acute or acuminate, tlie lower petiolate, more or less cor- 

 date, serrate, the upper entire, sessile. Heads small (3" long), in 1 (or more) 

 long, roeuiTed, nearly leafless, interrupted rae. Aug. — Oct. 



26. SOLIDA^GO, L. Goldenrod. (Lat. soUdari, to unite ; from the 

 vulnerary qualities of the plants.) Flowers of the ray about 5, $ , re- 

 mote ; of the disk ^ 5 involucre oblong, imbricate, with appressed scales ; 

 receptacle punctate, narrow ; pappus simple, capillary, scabrous. — 2X 

 Herbs, very abundant in the tj. S. St. erect, branching near the top. 

 Lvs. alternate. Hds. small, with 1 to 15 (very rarely 0) small rays. 

 FIb. yellow (one species whitish), expanding in the autumnal mouths. 



a Shrnt "1 to Sfhigli. Kaysl to 8. Boiithern No. 1 



a Herbaceous ; heads without rays, — discoid Nos. 2, 3 



a Herbaceous ; hcids radiate, rays, 1 to 15, usually euiall. (b) 



b Scales of the involucre with recurved, herbaceous tips Noa. 4, .^; 



b Scales imbricated, erect, scarious, seldom herbaceous, (c) 



C Eays white or cream-colored. Clusters axillary and terminal No, 6 



C Kays golden yellow, (d) 



d Inflorescence axillary (chiel3y), in clusters or short racemes, (e) 



e Stems pubescent Nos. 7,8, y 



e Stems glabrous Nos. 8, 9 



d Infloresceince terminal, virgate or paniculate, (f ) 



f Clusters or rac. erect, not seciind. Lvs. feather-vclnod. (g) 



g Heads large, with loose scales, Alpine plants ..Nos, 10 — 12 



g Heads not large. Plants glabrous. Eays 4 to 7 Nos. 13 — lf> 



g Heads not large. Plants soft-downy. K.ays 9 to 12 Nos. 16, 17 



f Clusters or racemes recurved and sccund (one-sided), (h) 



h Leaves 3 (or l)-veined. Very smooth, salt-marsh herbs. Nos, IS, 19 



ll Leaves evidently 3~veined. Herbs inland, &c, (k) 



k Leaves entire or very nearly so Nos. 20, i'l 



k Leaves serrate. Stem smooth and glabrous, , Ncs, 22-6-1 



k Leaves serrate. Stem roughish-pubescent Nos. 35, 2(5 



il Leaves not veiny, thick, subentire. Herbs inland Nos. 27 — 'iO 



il Leaves evidently feather-veined, mostly serrate, (m) 



vn Stem b.airy ov downy. Leaves rough or not .Nos. 30 — Hi 



m Stem glabrous. Leaves glabrous or not. Kays 2 to 5 . Nos. 3.? — && 

 m Stem glabrous. Lvs. glabrous or not. Eays 6 to 13. (nj 



