BIDENS. 215 



10. S. campes'tris (DC.) ; shaggy, st. simple, rt.-l. oblong nearly 

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

 volucre woolly below nearly glabrous in the upper half, fr. 

 hispid. E. B. 152. St. 68 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 it is often 

 thrice as large throughout. Chalk Downs. P. ? VI. E. 



11. 8. spathulafolius (DC.) ; shaggy, st. simple, rt.-l. ovate- 

 spathulate arachnoid above more woolly beneath, st.-l. ovate- 

 oblong narrowed into broadly winged petioles, upper sessile 

 linear or lanceolate clasping, invol. woolly, fr. hispid. J. of E. 

 xx. t. 226. R. xvi. 978. Schultz, Herb. Norm. 690 ! St. 

 1 3 ft. high, with large clasping st.-leaves often much en- 

 larged at the base. Fl. yellow. Near Holyhead. South part 

 of Mickle Fell range. Yorkshire. Mr. J. Backhouse ! P. or B. 

 VI. VII. E. 



[S. Cineraria (DC.) ; a Mediterranean species, with 1. densely white- 

 felted beneath and deeply pinnatifid, the segm. broadening and lobed* at 

 the extremities, is naturalized and hybridizes with S. Jacobcea at Dalkey, 

 Co. Dublin. See J. of B. xl. (1902) p. 401, t. 444.] 



Tribe VIII. Helianthoidea. 



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

 fern, radiant ligulate flowers. Anth. without tails or scarcely 

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

 of oblong scales. 



23. (24.) EI'DENS Linn. 



1. JB. tripartita (L.) ; I. stalked ^-partite, segments lanceolate 

 serrate, fr. obovate-cuneate usually with 2 bristles. E. B. 1113. 

 R. xvi. 941. St. 1 3 feet high, 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. VIII. IX. E. S. I. 



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

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

 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 [var. radiata 

 Gray] radiant marginal fl. are found. Watery places. A. VIII. 

 IX. E.S.I. 



