catkinate

Science Dictionary
catkin   (kāt'kĭn)  Pronunciation Key 
A long, thin, indeterminate inflorescence of tiny, petalless flowers growing on willows, birches, oaks, poplars, and certain other trees. The flowers on a catkin are either all male or all female. The female flowers are usually pollinated by the wind. Also called ament. See illustration at inflorescence.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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