Daisies and Thistles 185 
But the pollen of the ray-florets is produced in the 
manner already described for the Daisy, so the style 
terminating in a brush is still retained for the sole 
purpose of pushing the pollen out where it will be 
accessible to insect-visitors; in this species the style 
does not separate into two arms. 
Mr. F. E. Hulme, in his Familiar Wild Flowers, 
tells us that the name Feverfew “points to the old 
belief in its efficacy; the significance being that fever 
patients need be but few in number were the virtues 
of this plant sufficiently appreciated and _ utilised.” 
Surely this is a little misleading! The old Latin 
name of the plant was Pebrifugu, or the plant that 
puts fever and ague to flight, and it is more reasonable 
to suppose that the English folk-name is a mere oral 
corruption of that word. 
The heads of Milfoil, or Yarrow (Achillea mille- 
folium), are only about one-fourth of an inch across, 
but a great number of heads are crowded into each 
corymb, and the corymbs themselves are bunched 
together. Owing to this crowding together to 
produce a more striking effect, the white or pink rays, 
which are only five or six per head, are roundish or 
rather broader than long. They produce pistils only, 
whilst the greyish-yellow disk-florets contain both 
pistil and stamens. Yarrow is rich in honey, and 
attracts many insects. The leaves are deeply cut 
into many pinnate lobes, and these are cut again into 
five segments, the general effect being delicately 
feathery. The only other native in the genus is the 
Sneezewort (A. ptarmica), which has slightly larger 
heads, of which a few only are gathered into a 
corymb, but this arrangement allows of a larger 
