BIDENS. CARLINA. 201 



23. (24.) Bi'BEsrs Linn. 



1. S. Mpartita (L.) ; I. stalked ^-partite, seraients lanceolate 

 serrate, fr. obovate-cuueate usually -with 2 bristles.—^. B. 1113. 

 JR. xvi. 941. — St. 1 — 3 feet bie'h, with opposite branches. L. 

 narrowed into winged footstalks, sometimes undivided, some- 

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

 brownish yellow. — Marshy places. A. VIll. IX. B. S. I. 



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

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

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

 simple narrowed below but not stalked. Heads terminal, soli- 

 tary, drooping. Fl. brownish yellow. — Sometimes radiant 

 marginal fl. are found. — "Watery places, A. VIlI. IX. E. S. I. 



24. (20.) Gaiinso'ga B. and P. 



*1. G. parvifldra (Cav.); subglabrous, receptacle conical, 

 pappus of 8—16 scales.— %• -B. B. 765. R. xvi. 983.— St. 

 1 — 2 feet high ; branches opposite. L. opposite, ovate, stalked. 

 Fl. of ray few, broadly ligulate, short, white ; of the disk about 

 as long as the phyllaries, yellow. — A South-American plant 

 escaped from K!ew Gardens, and quite naturalized in many 

 places. A. Vn.— IX. E. 



Tribe IX. Cynarocephalece. 



Fl. all tubular. Style of the perfect fl. thickened and often 

 with a tuft of hairs below the branches, which are united or free 

 and downy externally. 



Section 1. CARLINEM. Heads many-flowered, never di- 

 oecious. Phyllaiies in many rows, distinct, often spinous. Fila- 

 ments distinct, naked. Fr. mostly villose. Pappus in 1 — 2 rows, 

 not surrounded hy an elevated margin. 



25. Saussu'kba Cand. 



1. 8. alpina (DO.) ; 1. nearly glabrous above cottony beneath, 

 lower ones ovate-lanceolate, upper sessile lanceolate, all distantly 

 toothed, heads few in a dense corymb, involucre subcylindricaj, 

 phyll. adpressed hairy. — Serratula L. E. B. 599. — St. 3 — 12 in. 

 high, erect, downy, simple, ending in a small corymb of heads 

 with pinkish fl. and purple anthers. Fl. scented like Heliotrope. 

 Fr. glabrous. — In alpine situations. P. VIII. E. S. I. 



26. Caeii'Na Linn. 



1. C. imlgdris (L.); st. corymbose one- or many-headed, 1 ob- 

 long-lanceolate sinuate spinous, outer phyll. bipinnatifld spinous, 



E 5 



