The neck of the archegonium is quite long, but does not project above the surface of the prothallium (Fig. 77, H).
Throughout he compares the structure with the pistillum (archegonium) of Bryophyta.
The archegonium (fig. 1) has the form of a narrow flask with a long neck.
Spermatozoids are formed in the antheridium, and these enter the archegonium and fertilize the germ cell.
The female organ (archegonium) and the cell which it produces are practically identical in both cases.
The fertilized nucleus or germ-cell of the archegonium in Cryptogams, from which the new plant is directly developed.
The young sporogonium is protected by a thick calyptra derived from the tissue of the thallus around the archegonium.
The egg-producing organ occurring in bryophytes (such as mosses and liverworts), ferns, and most gymnosperms. The archegonium is a multicellular, often flask-shaped structure that contains a single egg. Compare antheridium.