330 SYNGENESIA POLYGAMIA STJPERFLUA. [cL. XIX. 



numerous, strap-shaped, spreading, with three terminal teeth. 

 Filaments hair-like, short; anthers united into a cylindrical 

 tube. Germens angular, abrupt. Style thread-shaped, not 

 longer than the anthers ; stigmas obtuse, spreading. Seed 

 oblong, angular, abrupt, crowned by an elevated membranous 

 border. Name from pyr, fire or fever. 403. 



1. P. Parthenium. Common Feverfew. Leaves stalked, com- 

 pound, flat ; leaflets egg-shaped, cut ; panicle corymbose ; stem 



erect. Stem about two feet high : flowers with a yellow disk and 



white ray. The whole plant has a strong smell and bitter taste. 

 Perennial : flowers in June and July : grows in waste ground, and 

 on rocks and walls : frequent. Eng. Bot. vol. xviii. pi. 1231. Eng. 

 Fl vol. iii. p. 451. 1211. 



2. P. inodorum. Corn or Scentless Feverfew, Leaves sessile, pin- 

 nate, with numerous thread-shaped, pointed segments ; stem 



branched, spreading ; crown of the seeds entire. Stein about a 



foot high, angular, smooth : flowers large, with a convex yellow disk 

 and a pure white ray, on long, terminal, naked stalks. Annual : 

 flowers in August and September : grows in cultivated ground and 

 by roads : common. Eng. Bot. vol. x. pi. 676. Eng. Fl. vol. iii. p. 452. 

 A maritime variety with fleshy leaves is the P. maritimum, Sea Fe- 

 verfew, of some botanists, Eng, Bot, vol. xiv. pi- 979. Eng. Fl. vol. 

 iii. p. 453. 1212. 



39. MATRICA'RIA. WILD CHAMOMILE. 



Common calyx slightly convex, closely imbricated, with 

 several oblong, nearly equal scales, membranous at the edges. 

 Compound corolla rayed ; florets of the conical disk numerous, 

 perfect, tubular, with five equal, spreading segments ; those of 

 the ray numerous, strap-shaped, spreading, abrupt, with three 

 terminal teeth. Filaments hair-like, very short ; anthers united 

 into a cylindrical tube. Germen inversely egg-shaped. Style 

 thread-shaped, as long as the anthers ; stigmas spreading, 

 obtuse. Seed inversely egg-shaped, angular ; seed- down none. 

 Receptacle naked, nearly cylindrical, hollow. Name from 

 matrix, the womb. 404. 



1. M. Chamomilla. Common Wild Chamomile. Leaves smooth, 

 twice pinnatifid, with linear segments ; scales of the calyx dilated, 

 obtuse. Stem a foot high, erect, much branched, smooth, striated: 

 leaves sessile, deep green : flowers large, with a conical yellow disk 

 and white ray. Has the smell of common Chamomile, which it also 

 resembles in the flowers. Annual : flowers from June to October : 

 grows in cultivated and waste ground : frequent. Eng. Bot. vol. 

 xviii. pi. 1232. Eng. Fl. vol. iii. p. 454. 1213. 



40. A'NTHEMIS. CHAMOMILE. 



Common calyx hemispherical, closely imbricated, with several 

 oblong, nearly equal scales. Compound corolla rayed ; florets 

 of the disk numerous, perfect, tubular, with five equal, spread- 

 ing segments ; those of the ray numerous, strap -shaped, abrupt, 

 three-toothed. Filaments very short, hair-like ; anthers 

 united into a cylindrical tube. Germens inversely egg-shaped. 

 Style thread-shaped, as long as the anthers ; stigmas oblong, 

 spreading. Seed inversely egg-shaped, somewhat compressed, 



