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 ?
The newly formed egg and the neck and ventral canal cells are closely appressed to the archegonial jacket cells (Fig.
The stages of archegonial development of Plagiogyria euphlebia is similar to that described for other derived ferns described previously (Bell and Muthlethaler, 1962a; Yang et al.
Hairs appeared on the dorsal and ventral surfaces of the cushions in the archegonial regions as or after archegonia had formed.
Nayar and Kaur (1971) and Khare and Chandra (1995) found the archegonial neck to be 6-8 cell long.
The combination of characters of hair type and position, margin, antheridial structure, shapes of the antheridial dehiscence, antherozoid liberation, and number of archegonial neck cells were used by Atkinson (1973), Pryer et al, (1995), and Perez-Garcia and Mendoza-Ruiz (2004) to delimit subgenera, species, or groups of species within the Thelypteridaceae.
Distinguishing characteristics among the six species such as size of the spores, germination time, time of formation of the gametangia, thallus margin shape, number of archegonial neck cells was also observed.