basidium's Usage Examples:

rutilans, among the Ascomycetes) in which, however, the actual fusion (normally, in a sexual process, occurring immediately after association) is delayed until the formation of the basidium.

Conidia (basidiospores) borne in fours on a special conidiophore, the basidium.

In young asci a similar fusion of two nuclei occurs, and also in basidia, in each case the nucleus of the ascus or of the basidium resulting from the fusion subsequently giving rise by division to the nuclei of the ascospores and basidiospores respectively.

In this by far the larger division of the Basidiomycetes the basidia are undivided and the four basidiospores are borne on short sterigmata nearly always at the apex of the basidium.

The sporophyte may be considered to begin at the stage of nuclear association and end with the nuclear reduction in the basidium.

Formerly, before the relationship of promycelium and basidium were understood, the Uredineae were considered as quite independent of the Basidiomycetes.

This very large group of plants is characterized by the possession of a special type of conidiophore - the basidium, which gives its name to the group.

, or of basidia in Exobasidium, Corticium, 'c.

This, by far the smaller division of Basidiomycetes, includes those forms which have a septate basidium.

During the tetrad division in the basidium nuclear reduction occurs.

There is also a further reduction in that the basidium is not derived from a teleutospore but is borne directly on the mycelium.

The teleutospore puts forth on germination a fourcelled structure, the promycelium or basidium, and this bears later four sporidia or basidiospores, one on each cell.