Blue anemones need wood ants for their propagation. When the seed is ripe the plant will bow down to make it easier for the ants to pluck them. The seed is coated with a sweetener which wood ants are crazy about.
However, on their way back home, one ant or another will drop it’s seed and the seed will grow and form a new blue anemone.
Without wood ants who make mistakes there would be no blue anemones.