auxospore

/ (ˈɔːksəˌspɔː) /

a diatom cell before its silicaceous cell wall is formed

Words nearby auxospore

auxo, auxo-, auxocardia, auxochrome, auxocyte, auxospore, auxotonic, auxotroph, auxotrophic, av, av node

On the diminution in size having reached a limit in any species, the maximum size is regained by the formation of an auxospore.

Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 |Various
In the figure one valve alone of the auxospore is seen, the opposite valve not being in focus.

The Diatomaceae of Philadelphia and Vicinity |Charles Sumner Boyer
The valves of the auxospore are usually more or less arcuate, as in Cymbella, to which the genus is closely allied.

The Diatomaceae of Philadelphia and Vicinity |Charles Sumner Boyer
The sagittal plane of the valve of the auxospore is at right angles to the plane of the valve of the mother cell.

The Diatomaceae of Philadelphia and Vicinity |Charles Sumner Boyer

In conjugation, two cells open and secrete a gelatinous mass from which an auxospore is formed.

The Diatomaceae of Philadelphia and Vicinity |Charles Sumner Boyer