WASTES AND WAYSIDES IN SUMMER 



189 



membranous edge ; the ray white, and the disc yellow. It is 

 sometimes confused with the Wild Chamomile, but may be dis- 

 tinguished by the shape of the receptacle, which is hemispherical, 

 and not so conical as in Chamomilla. 



Our last example of the Composites of the wayside is the Yarrow 

 or Milfoil {Achillea millefolium) — a plant that might be mistaken 



The scentless Mayweed. 



The Yarrow or MnLPOiL. 



by the beginner for one of the Umbelhfers when seen at a distance ; 

 but a closer examination will show not only that the level-topped 

 inflorescence is a dense, terminal corymb, but also that the flowers 

 are collected into Httle heads, each of which consists of a few white 

 or pink, pistillate ray-florets, surrounding a Httle cluster of tubular, 

 perfect, yellow florets of the disc. The leaves are narrow oblong, and 

 very finely cut into many hair-Uke, branching segments. The 

 whole plant has a strong and rather pleasant odour. It grows from 

 six to eighteen inches high, and flowers from June to September. 



