Soredia Sentence Examples

The soredia are found in a large number of lichens, and consist of a single gonidium or groups of gonidia, surrounded by a sheath and hyphae.

The soredia are the most successful method of reproduction in lichens, for not only are some forms nearly always without spore-formation and in others the spores laregly abortive, but in all cases the spore represents only the fungal component of the thallus, and its success in the development of a new lichen-thallus depends on the chance meeting, at the time of germination, with the appropriate algal component.

In the majority of forms it is clear that the soredia rather than the ascospore must play.

Xylographa, e, f, Two soredia in the act of germinating; the Graphis, &c.) or hyphal envelope has grown out below into G none (e.g.