COMPOSURE. 'ill 



4. B. CONNA'TA. Muh. B. tripartita. Bte. 



Flowers discoid; outer involucre longer than the flower; achenia with 3 

 awns; leavis ix\M. In swainps and ditches. Stem 1 — 3 feet high, smooth 

 and 4-furrowed, with opposite branches. Leaves opposite, smooth, serrate, 

 llie lower ones often divided into 3 segments, the rest generaHy entire, 

 lanceolate, sharply seirate and somewhat connate. Flowers terminal, solitary, 

 without rays, consisting only of the tubular, yellow florets surrounded by a 

 leafy involucre. Aug. Ann. TTifid Burr-Marigold. 



5. B. bipinna'ta. 



Smooth; flowers subradiate, outer involucre the length of the inner; leaves 

 bipinnate, leaflets lanceolate, pinnatifid. Grows in waste places, 1 — 4 feet 

 hicrh. Stem branching, smooth. Leaves nearly smooth, bipinnalely dissected. 

 Heads with 3 or 4 obscure rays. July. Ann. Spanish A'eedlcs. 



38. SEN E' CIO. 



Involucre of many equal Icaflels or invested with scales at 

 base, the scales withered at the points ; receptacle not chailj' ; 

 pappus simple. 



Lat. scncx, an old man. The word is synonymous with Erigeron. An 

 extensive genus of herbs or shrubs. Lvs. alternate. Fls. jnoslly yellow. 

 Corollas longer than the involucre.. 



* Heads discoid. 



1. S. vulga'ris. 



Sfem. paniculate, erect, angular ; /rares sinuate-pinnatifid, dentate, amplex- 

 icaul. A common weed growing about houses, in waste grounds, rubbish, 

 &c. Introduced from Europe. Stem 16 inches high, leafy, branching 

 generally smooth. Leaves alternate, thin, blight green, the radical ones 

 stalked. Flowers without rays, terminal, scattered, yellow, appearing all 

 summer. Ann. Common GroundseL 



* * Heads radiate. 



2. S. au'reus. 



Radical leaves ovate, cordate, serrate, petiolate ; cuuline ones pinnatifid, 

 dentate, te-rrninal, segments lanceolate ; ■prdnncles subumbellate, thick; rays 

 8 — 12. A handsome, but very variable plant, with bright yellow flowers, in 

 meadows, woods, &c. Stern smoothish, erect, 1 — 2 feet high, simple, termi- 

 nating in a kind of umbellate corymb. Lower stem leaves lyrale. Flower 

 stalks thickened upwards. Scales smooth, acute, purplish at the apex. Rays 

 Bpreading. May— Aug. Per. Golden Scnecio. 



ji. Ba'samitce (S. Balsamitffi Mu!i) : radical leaves oblong-lanceolate, 

 crenate-denlate, petioled ; {/^^/.icr 07)f5 lyrate and pinnatifid, sessile ; peduncles 

 subumbellate. Stem about a fool high, nearly naked, densely woolly at base, 

 with a terminal umbel of yellow flowers. Leaves pubescent, all small and 

 distant. Flower-stalks villous at the base. Found in rocky hills and pastures, 



y. gracilis (S. gracilis P.) ; radical leaves very long petioled, orbicular, 

 eubcordate, crenate; ca?z/(nc <;kcs few, very serrate, linear oblong, dilated at 

 base, cut-dentate; peduncles very short, hairy, subumbellate; involucre 

 smooth ; rays few, very short. A slender state of the species a foot high, with 

 small flowers. Found on rocky shores 



o. ohovatus ; radical leaves oho\a\.e, crenate-serrate, petiolate; slcm leaves 

 pinnatifid, dentate; peduncles elongated. Found in meadov/s, &c. 



