SENECIO. BIDENS. 195 



E. B. 650.— St. 4—6 feet high, somewhat -n-oolly. Fl. yellow ; 

 those of the ray narrow, 13—16. — Fen ditches, very rare. P. 

 V.-VII. E. 



8. S. saracen'ieus (L.) ; /. sessile lanceolate acute glabrous 

 irregularly serrate especially the uppermost, st. straight solid, 

 corymbs terminal, ray of 6 — 7 flowers. — K jB. 2211. S. salice- 

 torum Grodr. — St. 3—6 feet high, smooth. L. broad. Ooiymb 

 many-headed. Fl. yellow. — There may be a second plant here 

 with 1. broadest below their middle very finely toothed, upper- 

 most nearly entire. Its 1. are much prolonged and rather 

 glaucous. It closely resembles S. Doria Jacq. — Watery places, 

 local. P. ^'in. E. S. I. 



B. Involucre without scales at its base. Heads with a spreading 

 ray. Leaves nearly entire. CiN]?iiAmA L. 



9. S. palus'tris (DC.) ; shaggy, st. much branched and corym- 

 bose above, I. broadly lanceolate half-clasping, lower 1. situcate- 

 dentate. — £. B. I51.---St. 3 feet high, thick, hollow, leafy. 

 Heads erect. Fl. bright yellow. — Fen ditches, now become 

 very scarce. P. VI. VII. E. 



10. S. campes'tris (DO.) ; shaggy, d. simple, rt.-l. oblong neaxlj 

 entire narrowed below, stem-l. lanceolate, heads corymbose, in- 

 volucre wooUy below nearly glabrous in the upper half, fr. his- 

 pid. — a. B. 152. — St. 6 — 8 in. high, with small st. -leaves. 

 Heads erect, 1 — 6, in a simple corymb. Involucre often almost 

 glabrous, pale. Fl. yellow. — In very wet seasons and near the 

 sea this plant is often thrice as large with many larger heads 

 and dentate lower leaves, when it is the /3. maritimus of authors. 

 — Chalk downs ; and maritime rooks near Holyhead. P. ? VI. 



E. 



Tribe VIII. HelianthoidecB. 



Heads discoid with all the fl. similar and perfect ; or with 

 fern, radiant ligulate flowers. Anth. vpithout tails or scarcely 

 tailed. Style-branches truncate. Pappus of 2 — 4 bristles, or 

 of oblong scales. 



23. (24.) Bi'dem Limi. 



1. B. tripartita (L.) ; I. stalked 3-partite, segments lanceolate 

 serrate, fr. obovate-cuneate usually -siith 2 bristles. — B. B. 1113. 

 B. xvi. 941. — St. 1 — 3 feet high, vrith opposite branches. L. 

 narrowed into winged footstalks, sometimes undivided, some- 

 times pianate-5-fid. Heads terminal, solitary, suberect. Fl. 

 brownish yellow. — Marshy places. A. VIII. IX. E. S. I. 



2. B. cer'nua (L.) ; I. sessile connate lanceolate undivided ser- 

 rate, fr. cuneate usually with 3—4 bristles.— £. B. 1114. B. 



x2 



