a male reproductive structure producing gametes, occurring in ferns, mosses, fungi, and algae.
- an·ther·id·i·al, adjective
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How to use antheridium in a sentence
At the top of the axis in the male plant rise the antheridia, surrounded by an envelope of modified leaves called the perigonium.
These are probably the representatives of the anthers of flowering plants and of the antheridia of the ferns.An Elementary Text-book of the Microscope | John William Griffith
De Bary and Pringsheim believe that these organs constitute the antheridia of the species of Saprolegnia to which they belong.
The slightly thickened membrane of the antheridia encloses protoplasm which is finely granular.
Immediately after the formation of the antheridia new productions show themselves, both around the oocyst and within it.
British Dictionary definitions for antheridium
the male sex organ of algae, fungi, bryophytes, and spore-bearing vascular plants, such as ferns, which produces antherozoids
- antheridial, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for antheridium
An organ in certain organisms that produces male gametes. Antheridia are found in many groups of organisms, including the bryophytes, ferns, ascomycete fungi, and some algae. Most gymnosperms and all angiosperms, however, have lost the antheridium, and its role is filled by the pollen grain. Compare archegonium.
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