246 SYNGEN. POLYGAM. STJPERF. Matricaria. 



Waste ground, hedges, ivalh. * Headington, near the Black-boy, 

 on a wall in the lane, leading to Barton, R. W. Walls of St. 

 John's College, Oxford. Bx. 

 Per. June. 



Stem branched, leafy. Ls. alternate, simply, or doubly winged, 

 segments running down the L-stalk, dull, paUsh green. Fl.- 

 stalks long, thickest towards their summit. Jta?/ sometimes 

 wanting. Fl. often double, the florets of the disk all becoming 

 strap-shaped, and white. Leafl. two or three pairs, a large one 

 terminating, wedge-shaped, with lobes, the middle of which is 

 three-cleft, the side ones scalloped; magnified leaflets appear 

 . sprinkled with minute spangles. 



Anti-hysteric, drunk as an infusion. Expressed juice vermi- 

 fuge. Light. Plant bitter, aromatic, yields an oil by distillation. 



P. inodSrum. Corn F. Scentless Mayweed. Leaves 

 stalkless, two-winged ; in numerous, hair-like, pointed 

 segments. Stem branched, spreading. Crown of the 

 seeds entire. E. B. 676. H. L, 101. Chrysanthe- 

 mum inodorum. Sb. 257. 



Cultivated fields, ivay sides. 



An. July. 



Stem about one f., branched, leafy, smooth. Ls. winged in a 

 lyrate manner. Fl. terminal, solitary, large, much resembling 

 Chry. Leucanthemum. Stalks naked. Disk yellow, ray white. 

 Cal.-scales smooth. Recept. conical, naked. Seeds with a mem- 

 branous, undivided border. 

 Py'rethrura distinguished from 'Anthemis, by a naked recept, 



and from Matricaria by its crowned seed. From Matric. chamo- 



milla by its larger flowers, and its seed crowned at the top, with a 



ver^^ shallow, whitish, membranaceous border. 



MATRICA'RIA. Wild-Chamomile. 



This genus differs from Pyrethrmn in the total want of a crown 

 to the seed, and in the sharply conical, nearly cylindrical, recep- 

 tacle. Sm. 



M. Ghamomilla. Common Wild-C. Leaves mostly- 

 smooth, two-wing-cleft; leaflets linear, simple, or 

 divided. Rays spreading. Calyx-scales dilated, blunt- 

 ish. E. B. 1232. C. 5. ^Q. Cham^melum. G. 

 E. 754. 



Cultivated, and waste grounds, dunghills, road sides. 



An. June. 



Stem about one f., much branched, very leafy, smooth. Ls. stalk- 

 less, clasping the stem, smooth, twice wing-cleft in the lower, 

 often simply wmged in the upper leaves. Fl. numerous, termi- 

 nal, solitary, about the size of the ^nth. nohilis, or Common 



