archegonium

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archegonium

[‚ark·ə′gōn·ē·əm]
(botany)
The multicellular female sex organ in all plants of the Embryobionta except the Pinophyta and Magnoliophyta.
References in periodicals archive ?
Spores develop free, in direct contact with soil, water and light, whereas the fertilized eggs of archegoniates develop enclosed within cells of the preceding sexual generation.
Bower proposed that archegoniates were derived from a haploid alga in which chromosome-reduction followed immediately upon formation of a zygote that remained attached to the maternal thallus.
Pringsheim (1876b) and Scott (1895, 1896) proposed that archegoniates evolved from an alga with multicellular asexual and sexual thalli that were fundamentally alike.
The alacrity with which Scott substituted Dictyota for Coleochaete as a model for the ancestor of archegoniates argues that the nature of this ancestor was not his principal objection to Bower's ideas.