184 The Romance of Wild Flowers 
The other native species is called the Scentless May- 
weed (MW. inodora), because, apart from its clustered 
flower-heads, in foliage and habit it resembles A. 
cotula, but gives forth neither bad nor good odours. 
It has been noted that bees appear to dislike the 
tonic odour of M. chamomulla, for very few of them 
visit it; the work of fertilisation being performed by 
flies which have distinctly different tastes. 
The Chrysanthemum group gives us three native 
species, one of them suspected of being originally an 
escape from cultivation that has got itself thoroughly 
naturalised in places. The two bond-fide natives arc 
the Corn-marigold (Chrysanthemum segetwm), with 
entirely yellow flower-heads, and Ox-eye Daisy 
(C. leucanthemumn), with large white rays. The 
dubiously-indigenous species is the Feverfew (C- 
parthenium). All these differ from Anthenis and 
Matricaria in the character of the leaves, which are 
less deeply and intricately divided, the lobes being 
broad. Each arm of the style ends im a distinct 
brush, and before these separate the brushes are side 
by side, serving to effectually clear the corolla-tube 
of all pollen. There are some curious variations of 
this pollen-brush in allied species: thus the Ox-eye 
Daisy has such a brush in the ray-florets, but as these 
produce no pollen the brush is not so highly developed. 
This fact lends force to the supposition that in these 
Composites the ray - florets did originally possess 
stamens, but with their suppression the brush-like 
character has become modified. The reverse of this 
modification is seen in the garden Marigold (Calendula 
officinalis), in which the disk-florets possess no stigmas, 
the seeds being produced by the ray-florets alone. 
