Does sexual dimorphism exist in flowering phenology traits in anemophilous dioecious species? A test with Rumex acetosa.

In wind-pollinated R. acetosa, little sexual dimorphism in phenological traits may have evolved to achieve synchronous flowering with the opposite sex. Our results suggest that, in angiosperms, not only common selection but also anemophily-specific selection may shape little sexual dimorphism in R. acetosa, unlike in entomophilous plants.