disk flower

disk flower

noun Botany.
one of a number of small tubular flowers composing the disk of certain composite plants.
Also called disk floret.
Compare ray flower.


Origin:
1865–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Disk flower is always a great word to know.
So is antheridia. Does it mean:
male reproductive structure which produces gametes in ferns, mosses, fungi and algae
plants without a xylem and phloem to transport fluid and nutrients internally
American Heritage
Science Dictionary
disk flower  
Any of the tiny tubular flowers in the central portion of the capitulum or flower head of certain plants of the composite family (Asteraceae or Compositae). In many composite flowers, such as the daisy and sunflower, the disk flowers are surrounded by flattened ray flowers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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