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Goat willow catkins
Goat willow catkins. Male catkins on a goat willow (Salix caprea) tree. A catkin is a cluster of flowers forming a spike-like structure. The small flowers do not have petals and will be either all male or all female. They go through various stages in the flowering season. The male catkins release pollen which fertilizes the female catkins to form seeds, which are scattered by the wind to form new willow trees. Photographed in March, in Dorset, UK.
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