archegonium

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Related to archegonia: megaspores

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 ?
The number of juvenile archegonia of W extenuata peaked in autumn, which was followed by a peak in number of immature archegonia in winter, then a peak in number of mature archegonia in winter and spring and, lastly, a peak in number of dehisced archegonia in summer.
The juvenile, immature and mature phenostages of both archegonia and antheridia of Rhynchostegium tenuifolium peaked in summer but dehisced stages peaked in autumn.
With respect to Rosulabryum billarderii, all phenostages of archegonia peaked in spring although juvenile and mature stages occurred in good numbers in winter, but only in forests of 15 years-since-harvest.
Archegonia often undergo rapid development while antheridial development often requires more time (Imura 1994; Miles et al.
Rhaphidorrhynchium amoenum had a greater number of antheridia than archegonia, which offset the greater number of perichaetia than perigonia.
dioicous Having the antheridia and archegonia on different plants.
muenchii is cordiforme, no archegonia are produced, only antheridia were reported; nevertheless, the sporophyte talus has an apogamic origin (Perez-Garcia et al.