Sex changes have been seen in a few other dioecious plants, like maple trees. (newscientist.com)
Willows are dioecious with male and female flowers appearing as catkins on different plants; the catkins are produced early in the spring, often before the leaves or as the new leaves open. (sciencedaily.com)
Kevin Burns and Patrick Kavanagh at Victoria University of Wellington in New Zealand measured the leaf and stem sizes of 38 dioecious plant species and discovered that they follow the sex - size rule (The American... (newscientist.com)