Allison A. Snow Ohio State University Department of Plant Biology Columbus Ohio 43210 USA
pollen tubes, Hibiscus moscheutos, pollen grains
BSA Plant Images Online -
Wild rose mallow (Hibiscus moscheutos): flowers at left; close-up view of stigma at right, where excess pollen grains typically deposited by bees germinate and the resulting pollen tubes must compete for ovules.
copyright: Allison A. Snow, BSA
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