COMPOSITE. 



433 



serrate. Flower-heads few, in a loose ter- 

 minal corymb. Involucres hemispherical, 

 slightly cottony, smaller than in the 

 Camomiles, but much larger than in the 

 Milfoil A. Florets of the ray generally 

 from 10 to 15, short, broad, and white ; 

 those of the disk numerous, interspersed 

 with small linear scales. 



In moist, chiefly hilly pastures, in 

 northern and central Europe and Rus- 

 sian Asia, becoming a mountain plant in 

 southern Europe, yet not extending to 

 the Arctic regions. Common in Britain. 

 Fl. summer, rather late. 



Fig. 514. 



2. Milfoil Achillea. Achillea Millefolium, Linn. (Fig. 515.) 

 (Eng. Bot. t. 758. Milfoil or Yarrow.) 



Stock perennial, creeping under- 

 ground, with numerous short, leafy bar- 

 ren branches, and erect, almost simple 

 flowering stems, about a foot high. 

 Leaves oblong or linear in their outline, 

 but finely cut into numerous short, but 

 very narrow and deeply pinnatifid seg- 

 ments. Flower-heads numerous, small, 

 and ovoid, in a dense terminal corymb. 

 Florets of the ray seldom above 5 or 6 

 in each head, white or pink. 



In pastures, meadows, waste places, 

 etc., very abundant in Europe and Rus- 

 sian Asia from the Mediterranean to the 

 Arctic Circle, and extends over a great 

 part of North America. It is also one 

 of the commonest of British plants. Fl. 

 the whole summer. It varies with the 

 foliage nearly glabrous or densely co- 

 vered with white woolly hairs. 



VOL. I. 2 L 



Fig. 515. 



