154 



COM POSITS. [ Saussurea. 



Smith's history of that county. As I found many of the plants men- 

 tioned by him in the places he found them, I have little doubt of his 

 being correct in this instance, although I did not find it when passing 

 rather hurriedly through that part of the country. Fl. Aug. Sept. 0. 



21. BIDENS. Linn. Bur-marigold. 



Involucre of many scales, outer ones or bracteas at the base 

 foliaceous. Receptacle plane, chaffy. Corollas sometimes 

 radiant. Fruit crowned with from 2 5 persistent awns, 

 which are rough with minute, deflexed bristles. Name ; bis, 

 double, and dens, a tooth ; from the two awns or teeth which 

 crown the fruit. Syngenesia. JEqualis. 



1. B. cernua, Linn. Nodding Bur-marigold. Flowers 

 drooping ; bracteas lanceolate, entire, (longer than the invo- 

 lucre); leaves lanceolate, serrated, undivided; bristles of the 

 fruit about three, erect. Br. Fl. I. p. 353. E. Fl. v. hi. p. 

 399. E.Bot.t. 1114. 



Sides of ditches, rivulets and lakes, frequent. Fl. June Aug. 0. 

 One to two feet or more high, branched and slightly hispid. Leaves 

 glabrous, deeply serrated. Flowers large, greenish-yellow. 



2. B. tripartita t Linn. Trifid Bur-marigold. Leaves tri- 

 partite ; leaflets lanceolate, deeply serrated ; bristles of the pe- 

 ricarp 23. Br. Fl. 1. p. 354. E. Fl. v. iii. p. 399. E. Bot. 

 t. 1113. 



Marshy places, sides of pools and lakes, not unfrequent, in various 

 parts of the country. FL July. 0. Readily distinguished by its 

 deeply serrated dark green leaves, which are divided into three or five 

 deep segments. Flowers smaller than the last, slightly drooping. 



Tribe II. Cynvrocephala. Juss. 



Florets all tubular. Receptacle paleaceous. Stigma articu- 

 lated with the apex of the style. Leaves usually spiny. 



22. SAUSSUREA. De Cand. Saussurea. 



Involucre oblong, imbricated with unarmed scales. Receptacle 

 setose or chaffy. Pappus double, sessile ; exterior of short, 

 rough bristles, persistent ; interior feathery, united at the 

 base and deciduous. Named in honour of the two Saussures, 

 Father and Son. Syngenesia. jEqualis. 



1. S. alpina, De Cand. Alpine Saussurea. Leaves toothed, 

 cottony beneath, lanceolate, those of the root ovato-lanceolate, 

 stalked; flowers in a clustered umbel. Br. Fl. 1. p. 349. 

 Serratula alpina, Linn. E. Bot. t. 599. E. Fl. v. iii. p. 383. 



Moist alpine rocks. Cliffs near the summit of Brandon mountain 

 County of Kerry. 1804. Fl. Aug. TS-.Stem 8 to 12 inches high, 



