JULY. 329 
sides ; the first and most common is in flower nearly all the 
summer. 
ACHILLEA MILLEFOLIUM. Common Yarrow or Milfoil. 
The specific name is derived from its leaves, which seem 
divided into a thousand parts ; they are soft, as well as the 
stalk, which grows a foot or more high, and is crowned at 
the top by clusters of small, white, or sometimes rose- 
coloured flowers. 
ACHILLHZA Prarmica. Sneezewort Yarrow. Less common. 
Stem from one to three feet high, erect, and clothed with 
leaves, which are long and narrow, pointed, and finely cut 
at the edges; the flowers are white, both ray and disk. 
When dried, and made into a powder, it is employed to 
excite sneezing. 
SYNGENESIA. FRUSTRANEA. 
CoROLLIFLORZ. ASTERACE. 
CENTAUREA. (Knapwesp, BLUE-BOrTLE.) 
Generic Character. Jnvolucre imbricated. Corollas of the 
ray funnel-shaped, longer than those of the centre. 
CENTAUREA CYANUS. Corn Blue-bottle. This well known 
and beautiful flower is a universal favourite, and deservedly 
