Plants in the genus Corylus are monoecious. They produce separate male and female flowers on the same plant. The catkins are fully formed by autumn but will not open until late winter or early spring. The female flowers (on left in this image) are inconspicuous, consisting of only the red styles of the pistils protruding from the bud scales. The male catkins (on right in this image) are pendulous, elongate and visible during winter.
NOTE: The images in this photo are of Corylus americana.
Karren Wcisel, TreeTopics.com
Image Creation Date
Betulaceae, Corylus americana, hazel, hazelnut, filbert, deciduous, shrub