The AI-powered English dictionary
plural archegonia
(botany) A multicellular reproductive structure that contains a large, non-motile gamete (egg cell), and within which an embryo will develop. quotations examples
On fertilization, the archegonia form obyriform calyptrae that are distinctly narrowed at base to form a stalk or peduncle; this does not occur in other Hepaticae.
1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, New York, N.Y.: Columbia University Press, page 5