168 FLOWERS OF THE. ROADSIDES AND HEDGES 
anthers and stigma ripening together. The stigma serves as an 
alighting place for insects which bear pollen from other flowers. 
When they do not visit the flower, and in wet weather, the flowers 
are self-pollinated. 
There is a fleshy ring surrounding the styles on the upper margin 
of the calyx tube, within the point where the stamens are inserted, so 
that the stigmas only are visible. The numerous stamens with yellow 
M Photo. J. Holmes 
DoG ROsE (Rosa canina, L.) 
anthers add to the attractiveness of the flower. The stamens first 
bend outwards, while the petals are erect, the ring and stigmas serving 
as the only alighting place for insects, and pollen is deposited on the 
stigma, so that the flower is cross-pollinated. The oblique position of 
the flowers turned to the sun makes self-pollination possible in wet 
weather, and when insects do not visit the flower. 
The Dog Rose is visited by Feleophilus, Syritta, Melegethes, 
Anthrenus, Anthoconius, Cetonia, Phyllopertha, Mordella, Rhagium, 
Strangalia, Luperus. 
