Definition of archegonium in English:



  • The female sex organ in mosses, liverworts, ferns, and most conifers.

    • ‘Notwithstanding their general similarity, the archegonia of mosses differ externally from antheridia in having a longer neck and longer stalk.’
    • ‘This is a new feature and contrasts with most free-sporing plants in which sperm, rather than the whole microgametophyte, move to the archegonia.’
    • ‘Dispersed by wind, these small spores germinate into small, freeliving, disc-shaped gametophytes that produce either archegonia - organs in which egg cells are formed - or sperm-producing antheridia.’
    • ‘Lastly, archegonia are always absent in angiosperms.’
    • ‘Antheridia formed on the dorsal and ventral surfaces of the wing, while archegonia formed on the ventral surface of the anterior cushion.’


Mid 19th century: modern Latin, from Greek arkhegonos, from arkhe- ‘chief’ + gonos ‘race’.