Catkins

Catkins

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Credit: DUNCAN SHAW/SCIENCE PHOTO LIBRARY

Caption: Catkins on a Silver Birch (Betula pendula). The large, male catkins are hanging below the branch, while the small, female catkins are on top. Catkins consist of many tiny petal-less flowers clustered around an axial stem. The male catkins release millions of pollen grains, which are carried on the wind to pollinate the female catkins.

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Keywords: betula pendula, biological, biology, botanical, botany, branch, catkin, catkins, female, flower, flower head, flowers, heads, inflorescence, male, nature, plant, silver birch, tree

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