Editing Basidium (section)

==Structure==
Most [[basidiomycota]] have single celled basidia ('''holobasidia'''), but some have ones with many cells (a  '''phragmobasidia'''). For instance, [[Rust (fungus)|rust fungi]] in the order ''Puccinales'' have phragmobasidia with four cells that are separated by walls along their cross section. Some jelly fungi in the order [[Tremellales]] also have phragmobasidia with four cells that are separated by walls and are shaped like a cross. Sometimes the basidium develops from a '''probasidium''', which is not elongated like a typical [[hypha]]. The basidium may be stalked or attached directly to the hyphae{{cn|date=February 2025}}.

The basidium is normally [[Club (weapon)|club]]-shaped: narrow at the stem and wide near its outer end. It is widest in the middle hemispherical dome at its apex, and its base is about half the size of the widest diameter at the highest point. Basidia with a short and narrow base are shaped like an inverted egg, and occur in genera such as ''[[Paullicorticium]]'', ''[[Oliveonia]]'', and ''[[Tulasnella]]''. Basidia with a wide base are often shaped like a barrel.<ref name="Donk 1963"/>