CL. XIX.] SYNGENESIA POLYGAMIA SUPERFLUA. 323 



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; an- 

 thers united into a cylindrical tube. Germen 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, corymbose; scales 



of the calyx recurved. Soft and downy : stem erect, two or three feet 



high : flowers dull-yellow. Biennial : flowers in July : grows in moun- 

 tainous meadows and pastures: frequent in England. Eng. Bot. vol. xvii. 

 pi. 1 195. Eng. Ft. vol. iii. p. 420. 1 184. 



27. ERI'GERON. 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. Canadgnsis. 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 indigenous. Eng. Bot. 

 vol. xxix. pi. 2019. Eng. Fl. vol. iii. p. 421. 1185. 



2. E. 6cris. 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. 1 186. 



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 July: grows on rocks 



