40 



THE COLOURS OF FLOWERS. 



the campions (Fig. 15) and true pinks, have a tubular 

 calyx, formed by the coalescence of the five sepals, 

 and the expanded petals are raised on long claws ; 

 which makes their honey, inclosed in the tube, acces- 

 sible only to the higher insects. Most of them also 

 display special adaptations for a better class of insect 

 fertilization in the way of fringes or crowns on the 

 petals. These more profoundly modified kinds are 



Fig. 14.— Flowers of chickweed {StcUaria) ; white. 



generally pink or red. For example, in the most 

 advanced British genus, Dianthus, which has usually 

 vandyked edges to the petals, our four English species 

 are all brightly coloured, D. armeria, the Deptford 

 pink, being red with dark spots, D. prolifer purplish 

 red, D. deltoides, the maiden pink, rosy spotted with 

 white, and D. cmius, the Cheddar pink, bright rose- 

 coloured. It is much the same with the allied genus 

 Lychnis. 



