232 Flowers and their Pedigrees. 



ever, it could not easilv replace them, so it has coloured 

 its calyx or flower-cup instead, which answers exactly 

 the same purpose. In other words, having no petals, 

 it has been obliged to pour the purple pigment with 

 which it allures its butterfly friends into the part 

 answering to the green covering of the salad-burnet. 

 It has a head of small coloured blossoms, extremely 

 like those of the sister species in many respects, only 

 purple instead of green. Moreover, to suit its new 



FtG 49. — Flower of Stanch- Wcund or Great Burnet. 



habits, it has its cup much more tubular than that of 

 the salad-burnet ; its stamens do not hang out to the 

 wind, but are inclosed within the tube ; and the 

 pistil has its sensitive surface shortened into a little 

 sticky knob instead of being split up into a number 

 of long fringes or plumes. All these peculiarities of 

 course depend upon its return from the new and bad 

 habit of wind-fertilisation to the older and more 

 economical plan of getting the pollen carried from 



