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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Creative#:

TOP01477571

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

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N/A

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No

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