THE HEATHS AND BLUEBELLS. 
83 
stigma, which, when touched either intentionally or 
by an insect, springs into the flower by a quick 
trigger-like action. By means of this sensitive action, 
the stigma is forced among the anthers, brushing the 
pollen from them on to its own surface. This then 
allows for fertilisation of the seed. The trigger plant 
is usually of a heliotrope colour, occurring in a white 
form rarely and only in mountain districts. In these 
localities, too, the flowers are very large. 
Another plant, and still belonging to another genus, 
is Brunonia Australis. This is the beautiful bright 
blue “ pincushion ” so common everywhere in Aus- 
tralia in late spring or early summer. This flower is 
often taken as belonging to the composite order, 
whereas it is somewhat removed from that order, 
belonging to the Goodeniaceae family. This plant 
might readily be used as a border or edging plant; 
its bright blue flowers would be a novelty, and it 
would have far more colour and character than many 
border plants. It, except for its true blue colour, is 
not unlike the old Thrift edging that was so common 
a few years ago. 
