430 Ouder 10.— COMPOSITE. 



ened into awns. — It Glabrous, brandling herbs. Lvs. lanceolate, en- 

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



1 B. glastifolia L'Her. Lvs. linear-lauceolate, narrowed to the base, the lowest 

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

 smooth, with 2 awns nearly 'its length and several very minute seta: between. — A 

 very slender plant 3 to If, between Aster and Erigeron, in prairies, &c. Can. "W. 

 to Ga. and La. St. strict, green. Lvs. 3 to G' long, the upper setaceous. Hays 

 about 30, spreading 7 to 9". JL, Aug. 



2 B. diffusa Ell. Lvs. linear -lanceolate and linear-subulate, all entire ; hds. 

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

 obovate, narrowly winged, with 2 awns less than half its length, and several very 

 minute setae between. — Ga. to La., common. A very slender and diffusely 

 branched plant, 3 to 7f high. Rays spreading about 5". Aug. — Oct. 



3 B. asteroides L'Her. Lvs. lanceolate, all entire; hds. in a somewhat con- 

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

 with '1 to 5 minute setae, none of them produced into awns. — Margins of swamps, 

 Venn, to Ga. Plant 1 to of high. Kays 13 to 20, spreading 6 to 7". Aug., 

 Sept. 



25. BRACHYCHJETA, Torr. & Gr. False Solidaoo. (Gr. jSpo^ff, 

 short, %curr\, hair ; in reference to the pappus.) Heads few-flowered J 

 rays 4 or 5, $ , ligulate ; disk-flowers 4 or 5, « , tubular ; involucre 

 cyliudric, imbricate ; receptacle nafced; pappus a single row of scale- 

 like bristles shorter than the obconic achenium. — 2f Habit that of a 

 Bolidago. 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 

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

 alternate, cordate, ovate, acute or acuminate, the lower petiolate, more or less cor- 

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

 long, recurved, nearly leafless, interrupted rac. Aug. — Oct. 

 26., SOLIDA'GO, L. Goldenrod. (Lat. solidari, to unite; from tho 

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

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

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

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

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

 Fls. yellow (one species whitish), expanding in the autumnal months. 



a 8hrnb t to 3f high. Kays 1 to 3. Southern No. 1 



a Herbaceous; heads without rays, — discoid Nos. 2, 9 



a Herbaceous ; heads radiate, rays. 1 to 15, usually small, (b) 



b Scales of the involucre with recurved, herbaceous tips Nos. 4, % 



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



C Rays white or cream-colored. Clusters axillary and terminal ,No. ft 



C Rays golden yellow, (d) 



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



e Stems pubescent Nos. 7, S, y 



e Steins glabrous Nos. 8, B 



d Inflorescence terminal, virgate or paniculate, (f ) 



1' Clusters or rac. erect, not sccund. Lvs. feather-veined, (g) 



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



g Heads not large. Plants glabrous. Rays 4 to 7 Nos. 13 — 15 



g Heads not large. Plants soft-downy. Rays 9 to 12 Nos. 16, IT 



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



h. Leaves 3 (or l)-veined. Very smooth, salt-marsh herbs Nos. IS, 1$ 



h. Leaves evidently 3-veined. Herbs inland, &c. (k) 



k Leaves entire or very nearly so Nos. CO, 21 



k Leaves serrate. Stem smooth and glabrous Nos. 22-C-i 



k Leaves serrate. Stem rougbish-pubescent Nos. 25, 26 



b. Leaves not veiny, thick, subentire. Herbs inland Nos. 2" — 29 



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



m Stem hairy or downy. Leaves rough or not Nos. "0 — 5 J 



m Stem glabrous. Leaves glabrous or not Rays 2 to 6. Nos. 83 — 3ft 

 m Stem glabrous. Lvs. glabrous or not. Rays to 12. (n. v 



