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catkin
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pussy willow black oak Long, slender male catkins hang from alder tree branches with green leaves in spring. European hornbeam Birch angiosperm inflorescences
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catkin: Media

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pussy willow
Male catkin of a pussy willow (Salix discolor).
Bill Larkin—Photo/Nats
black oak
The leaves and catkins of a black oak (Quercus velutina).
Walter Dawn
alder catkins
Male catkins (flower clusters) dangling from an alder branch in the spring.
© Vladimir Bilobaba/Dreamstime.com
European hornbeam
Winged fruits of the European hornbeam (Carpinus betulus).
MPF
Birch
Young leaves, male catkins, and (top center) female flowers of paper birch (Betula...
© Stocksnapper/Fotolia
angiosperm inflorescences
Common types of inflorescences among the angiosperms.
Encyclopædia Britannica, Inc.
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