CL. XIX.] SYNGENESIA POLYGAMIA STJPERFLUA. 323 



the same manner. Annual : flowers in July and August : grows in 

 dry pastures, gravel pits, and waste grounds : common. Eng. Bot. 

 vol. xiv. pi. 946. Eng. Fl. vol. iii. p. 418. 1183. 



26. CONY'ZA. CONYZA. 



Common calyx imbricated, egg-shaped or roundish, with 

 acute, stiff scales, covered with prominent points. Compound 

 corolla ; florets tubular ; those of the disk numerous, funnel- 

 shaped, with few equal segments, perfect and fertile ; those of 

 the circumference cylindrical, with an oblique, strap-shaped, 

 three-cleft limb, and having only a pistil. Filaments five, hair- 

 like, very short ; anthers united into a cylindrical tube, Ger- 

 men oblong. Style thread-shaped, as long as the corolla; 

 stigmas two, spreading. Seed oblong, uniform in all the florets ; 

 seed-down simple, sessile. Receptacle slightly convex, naked. 

 Name from conops, a gnat. 391 . 



1. C. squarrosa. Plowman's Spikenard. Leaves between lance- 

 shaped and egg-shaped, crenate, downy ; stem herbaceous, corym- 

 bose; scales of the calyx recurved. Soft and downy : stem erect, 



two or three feet high : flowers dull-yellow. Biennial : flowers in 

 July: grows in mountainous meadows and pastures: frequent in 

 England. -En^-Bof.TOl.xviLpl. 1195. Eng. Fl. vol. iiL p. 420. 1184. 



27. EBTGERON. FLEA-BANE. 



Common calyx imbricated, egg-shaped ; scales linear, erect, 

 the innermost longest. Compound corolla rayed ; florets of the 

 disk numerous, perfect, funnel-shaped, their limb with five 

 equal segments; those of the ray numerous, tubular at the 

 base, with a strap-shaped, tapering, nearly erect limb, entire 

 or slightly toothed. Filaments hair-like, very short ; anthers 

 united into a cylindrical tube. Germen inversely egg-shaped, 

 angular. Style thread-shaped; stigmas two, oblong, slightly 

 spreading. Seed small, inversely egg-shaped ; seed-down 

 sessile, simple, rough. Receptacle flat, naked. Name from 

 eri, early, and geron, an old man. 392. 



1. E. Canadensis. Canadian Flea-bane. Stem panicled, rough 



with hairs, leaves lance-shaped, rough-edged, the lower toothed. 



Stem erect, angular, two feet high, with very numerous yellowish 

 flowers. Annual : flowers in August and September : grows in 

 cultivated ground, and among rubbish, in England, but is not indi- 

 genous. Eng. Bot. vol. xxix. pi. 2019. Eng. Fl.'vol. iii. p. 421. 1 185. 



2. E.dcris. Blue Flea-bane. Flower-stalks alternate, mostly one- 

 flowered ; leaves lance-shaped, obtuse, sessile ; seed-down nearly 



as long as the florets of the ray. Stem from one to two feet high, 



erect, branched, downy : flowers yellow. Biennial : flowers in July 

 and August : grows in dry pastures : frequent. Eng. Bot. vol. xvii. 

 pi. 1158. Eng. FL vol. iii. p. 422. 1186. 



3. E. alpinus. Alpine Flea-bane. Stem commonly one-flowered ; 



calyx hairy ; seed-down half as long as the florets of the ray. 



Stems from four to six inches high : leaves sessile, lance-shaped, 

 entire, hairy : flower rather large, pale-purple. Perennial: flowers in 



