SYNGENESIA— POLYG.-SUPERF. Erigeron. 421 



396. ERIGERON. Flea-bane. 



Linn. Gen. 422. Juss 1 80. Fl. Br. 876. Lam. t.68\. Gcertn. 1. 1 70. 

 Conyzella. Dill. Gen. 142. t. 8. 

 Conyzoides. Ibid. 



Nat. Ord. Composite, y, discoidece. Linn. 49. Corymhifei-cE., 

 sect. 2. Juss. 55. 7 following genera the same. 



Common Cal. imbricated, ovate-oblong ; scales linear, erect ; 

 the innermost longest, and all nearly equal. Cor. com- 

 pound, radiated ; jlorets of the disk numerous, perfect, 

 funnel-shaped, regular, their limb in 5, sometimes said 

 to be but 4, equal segments ; those of the radius nume- 

 rous, tubular at the base, the limb ligulate, tapering, 

 nearly erect, either entire or slightly toothed. Filam. in 

 the florets of the disk only, capillary, very short. Ajith. 

 in a cylindrical tube, simple. Germ, in all the florets, 

 fertile, small, obovate, angular. Style thread-shaped. 

 Stigmas 2, oblong, a little prominent, slightly spreading. 

 Seed-vessel none but the converging calyx. Seed small, 

 obovate. Down sessile, simple, rough, as long as the 

 florets. Recept. flat, naked, slightly cellular. 



Herbaceous, either annual or perennial, natives of Europe, 

 North America, or Southern Africa. Stem erect. Leaves 

 simple, either entire or toothed, roughish or downy. Fl. 

 panicled or corymbose, rarely solitary, with very narrow, 

 whitish or purplish, rays, and a yellow disk. The ge- 

 neric name, retaining its Greek termination, ought to be 

 of the masculine gender, as well as Tragopogon, and I 

 therefore, at the suggestion of my friend the Rev. Mr. 

 Holme, venture to correct this error in the specific names. 



*1. ^.canadensis. Canada Flea-bane. 



Stem hairy, panicled, many-flowered. Leaves lanceolate ; 

 lower ones toothed. 



E. canadense. Linn.Sp.Pl.\2\0. Willd.v.S. \9hA. Fl.Br.876. 



Engl. Bot.v. 29. t. 2019. Dicks. H. Sice. fasc.\0.\6. Fl. Dan. 



t. 1274. 

 E. n. 84. Hall. Hist. V.]. 35. 

 Conyza canadensis annua acris alba, linariae foliis. Raii Syn. i7o. 



Bocc. Sic. 85. t.46. 

 C. acris, flore albo. Merr. Pin. 29. 

 C. annua acris alba elatior, linariae foliis. Moris, v. 3. 115. sect. 7. 



t. 20. f. 29. 

 Virga aurea virginiana irsuta annua, di fiore pallido. Zan. 1st. 204. 



^78. 



