430 OBDEB 70. COMPOSITE. 



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

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



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

 serrate; hds. in a loose paniculate corymb; fr. obovate, with 2 awns, and several 

 minute setae between. Prairies, <fec. West and South. Very slender, 3 7f. 

 high, strict Lvs. 35' long. Rays pale, spreading 79". Jl. Aug. 



2 B. decdrreus. Lvs. oblong, margins decurrent on the winged stout stem , 

 hds. corymbous, globular in fruit ; ach. as iu No. 1 ; rays purple. Bottoms W. 



3 B. difiRisa Ell. Lvs. linear-lanceolate and linear-subulate, all entire; hds. 

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

 obovate, narrowly winged, with 2 awns lest 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. 



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

 densed corymb, on long peduncles; branches leafy; a':h. broadly oval, smooth, 

 with 4 to o minute setaj, none of them produced into awns. Margins of swamps, 

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

 Sept. 



25. BRACHYCH>CTA, Torr. & Gr. FALSE SOLIDAGO. (Gr. /JpotfJf, 

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

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

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

 like bristles shorter than the obconic 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 tho 

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

 alternate, cordate, ovate, acute or acuminate, the lower petiolatc, 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 the 

 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. It 

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

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

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



S Shrub 1 to 3f high, Uaysl to 3. Southern No. 1 



a Herbaceous; heads without rays, discoid Nos. 2, .'I 



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, (c) 



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



C Kays golden yellow, (d) 



d Inflore'scence axillary (chiefly), in clusters or short racemes, (e) 



e Stems pubescent Nos. 7,8, v 



O Stems glabrous Nos. 8, 9 



d Inflorescence terminal, virgate or paniculate, (f ) 



f Clusters or rac. erect, not secund. Lvs. feather-veined, (g) 



g Heads large, with loose scales. Alpine plants Nos. 10 13 



g Heads not largo. Plants glabrous. Kays 4 to 7 Nos. 13 IK 



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



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



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



b. Leaves evidently .".-veined. "Herbs inland, &r. (k) 



k Leaves entire or very nearly so Nos. 20, 21 



k Leaves serrate. Stem iviootli and glabrous Nos. 22-24 



k Leaves serrate. Stem rougliish-j.ubescent Nos. 2T>, 2C. 



h Leaves not veiny, thick, snbcntire. Herbs inland Nos. 2T 1: 



h Leaves evidently feather- veined, mostly .serrate, (m) 



m Stem hairy'or down v. Leave* roii<rh or not Nos. .TO JiiJ 



m Stem pintiroiis. Leaves srlal.ror.s or not. Ky> '_> f.. ft Nos. 3334 

 m Stem glnlii 0:1*. l.\s. gljibvims or not. K 



