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Date: | Fri, 1 May 2020 21:51:26 -0400 |
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> In Fraxinus, there are five genera with species that are adapted to wind-pollination. Here, anemophily is believed to have four separate origins. Many species have inconspicuous, whitish to yellowish-green flowers, which appear to attract unspecialised pollinators by offering pollen as a reward. This is believed to be an exaptation (a trait that facilitates or is a prerequisite) for ambophily, which in turn may have selected for anemophily. Many of the taxa of Oleinae are hermaphrodites, but dioecy and androdioecy are common breeding systems, especially among the anemophilous or ambophilous species. -- Eva Wallander (2001) Evolution of wind-pollination in Fraxinus
exaptation = a process in which a feature acquires a function that was not acquired through natural selection; a feature having a function for which it was not originally adapted or selected.
anemophily = wind pollinated
ambophily = pollination by both wind and insects
dioecy = male and female reproductive structures on separate plants
androdioecy = a reproductive system characterized by the coexistence of males and hermaphrodites
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