richardsonii (small bullseye covering 4% of the flower disk), H ... They found that a pre-pattern is set up on the petal surface very early in the flower's formation, long before the petal ...

The petal acts like a 'paint-by-numbers' canvas ... Foraging requires a lot of energy and so if a bee can visit 4 flowers rather than 3 flowers in the same time, then this is probably beneficial ...