AUGUST. 353 
SYNGENESIA. SUPERFLUA. 
CoROLLIFLOR®. ASTERACES. 
PYRETHRUM. (Ferverrew.) 
Generic Character. nvolucre hemispherical, scales with a 
membranous border. lowers with a yellow disk and white ray. 
Very like the genus Chrysanthemum. Receptacle (the part re- 
maining after the seeds are pulled out) naked. 
PyYRETHRUM INopoRUM. Corn Feverfew, Scentless May- 
weed. Fields and way-sides common. Flowers large, upon 
long, naked stalks; ray white and large, disk or centre 
conical. Leaves divided into many hair-like segments. 
Stem about a foot high, branched, and spreading. Plant 
slightly aromatic. It is difficult to distinguish this from 
the following plant. 
SYNGENESIA. SUPERFLUA. 
CoROLLIFLORZ. ASTERACE. 
ANTHEMIS. (CHamomitz.) 
Generic Character. Jnvolucre hemispherical, scales with a 
membranous border. Receptacle convex and chaffy. 
AA 
