430 Oedee to.— composite. 



ened into awns. — 2t Glabrous, branching herbs. Lvs. lanceolate, en- 

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

 I'S. glastifdlia L'Her. Z/vs. liaear-lanceolate, narrowed to the base, <Ae lowest 

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

 smooth, with 2 awns nearly its length and several very minute sets between.^-A 

 yery slender plant 3 to 7f, between Aster and Erigeron, in prairies, &o, Gaii. "W. 

 , , to Ga. and La. St. strict, green. Lvs. 3 to 5' long, the upper setaceous. Eays 

 about 30, spreading T to 9". JI, Aug. 



2 B. difRisa Ell. I/os. liuear-lanceolate and linear-subulate, all entire ; hds. 

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

 obovate, narrowly winged, with 2 avms less tham Jialf its length, and several very 

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

 branched plant, 3 to 1i high. Eays spreading about 5". Aug. — Oct. 



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

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

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

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

 Sept. 



25. BRACHYCH.ffi'TA, Ton-. & Gr. False Solid ago. (Gv. Jipaxv^, 

 short, %a''T?;, 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. — 2i 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 

 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. Goldeneod. (Lat. soUdari, to finite ; 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. — 2f 

 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. 

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



a Shvub t toSfhigh. Kaysl to 3. Southern -..Bo.! 



a Ilevbaceous; heads without rays, — discoid Nos.2,8 



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



b Scales of the involucre with recurved, herbaceous tips No8.4,6 



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



c Rays white or cream-colored. Clusters axillary and terminal No. 6 



Kays golden yellow, (d) 



d. luflorescencs axillary (chiefly), in clusters or short racemes. ' (e) 



e Stems pubescent Nos. T, 8, y 



e Stems glabrous Nos. 8,9 



d Inflorescence terminal, virgate or paniculate, (f ) 



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



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



g Heads not Large. Plants glabrous. Eays 4 to 7 Nos. 18—18 



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



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



h Leaves 8 (or l)-veined. Very smooth, salt-marsb herbs Nos. 18, 19 



h Leaves evidently 8-veined. Herbs inland, te, (k) 



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



k Leaves serrate. Stem smooth and glabrous Nos. 22-34 



k Leaves serrate. Stem roughish-pubescent Nos.25,2IS 



n Leaves not veiny, thick, subontive. Herbs inland Nos.27— 29 



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



m Stem hairy or downy. Leaves rough or not Nos. 80— SS 



m Stoiii glabrous. Leaves glabrous or not. Rays 2 to 5. Nos. 83 — 36 

 jn Stem glabrous. Lvs. glabrous or not. Rays 6 to 12. (rL> 



