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Contact: Ginger Pinholster
gpinhols@aaas.org
202-326-6421
American Association for the Advancement of Science
Caption: Flowers of monkshood, Aconitum napellus, extend laterally from a main stem and open successively toward the apex. This arrangement is one of only three basic flowering structures observed in nature, reflecting the way developmental mechanisms and natural selection interact to constrain biological form, as described on page 1452 of the June 8 issue.
Credit: Karen Lee
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