What is "archegonia"

Usage examples of "archegonia".

In the Acrogynous Jungermanniaceae the plant is throughout foliose, and the archegonia occupy the ends of the main shoot or of its branches.

In addition special involucres around the archegonia have arisen independently in several series.

The archegonia are protected by being sunk in depressions of the disk or by a special two-lipped involucre.

The small thallus bears the antheridia and archegonia, each of which is surrounded by a tubular involucre, on the upper surface of distinct individuals.

The archegonia are borne at the apex of the main stem or of a lateral branch.

The necks of the archegonia hardly project above the general surface of the thallus.

The sexual organs are developed in groups at the apices, the antheridial group usually terminating the main axis while the archegonia are borne on a lateral branch.

Their general similarity to the mature antheridia and archegonia of liverworts and the main difference in their development have been referred to.