PERSONALITY OF PLANTS 
buzzer; some flowers depend upon him entirely 
in their efforts to propagate the species. 
The Bees and their relatives are particularly 
welcome to the flowers because they do the work 
of fertilization so well. Wingless insects are 
undesirable because they offer little guarantee 
that they will successfully carry pollen to some 
other flower of the same species. Even if it 
is not brushed off in the course of their labor- 
ious travels, they are not at all particular what 
kind of flowers they visit and so offer small hope 
of carrying pollen to its correct destination. 
Flying insects of the Bee family seem to have 
the work of cross-fertilization directly as- 
signed to them. On each of their separate, pol- 
len-gathering journeys, they are partial to one 
particular kind of flower. As they flit from 
blossom to blossom of the same species, going 
in and out of flower and flower, rubbing against 
a group of stamens here and brushing against a 
pistil there, they fertilize plant after plant in 
grateful acknowledgment of the store of sweets 
they are collecting. 
Many and ingenious are the methods which 
flowers adopt to make sure that only invited - 
[74] 
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