354 POPULAR FIELD BOTANY. 
ANTHEMIS NOBILIS. (Plate XIX. Fig. 75.) Common 
Chamomile. To most persons the aromatic smell will be 
sufficient to distinguish the Chamomile from the Feverfew ; 
but it differs also from that plant in the receptacle, being 
chaffy. In the Feverfew that part is naked; so that when 
the seeds are taken away the part where they were fixed is 
left quite clear. This species has leaves very finely divided. 
Stem about a foot long, procumbent and much branched, 
each branch terminated by a single flower, the disk yellow, 
and ray white. The whole plant is very bitter, highly aro- 
matic, and much used in medicine. ‘This quality is strongest 
in the involucre, which contains an essential oil. Common 
in gravelly places. 
Diccia. HENNEANDRIA. 
MonocHLaMyD#®. EUPHORBIACES, 
MERCURIALIS. (Mercury.) 
Generic Character. See page 117. 
MercurRIALIs ANNUA. Annual Mercury. Not a common 
plant, but occasionally found about towns and villages in 
waste places. About a foot high, with opposite branches, 
