Hallo..

to my knowledge, basidium produced 4 sexual spores (basidiomycota)

But if your question is how many spores could one fungi have, it depens on its age. Fungi with 68hrs age have more spores than 24yo fungi

That's what I know..

Generally 4, in some fungi its 2, very rarely more than 4.

The great majority of Basidiomycetes produce 4 spores per basidium, one on each corner like a 4-pointed crown. However, some deviate from this pattern: a notable example is Agaricus bisporus, the common mushroom you buy in shops, which as the name suggested produces 2-pronged basidia with two spores. Cutting a very thin section through a gill and squash-mounting it should allow you to see the basidia and spores under x400 magnification.

While a single meiotic division leads to the formation of 4 basidiospores, in some basidiomycetes this is followed by rounds of mitotic divisions resulting in 4 long spore chains that grow on the basidium. In such fungi the number of spores produced from a single basidium is limited only by the number of mitotic divisions. In Cryptococcus neoformans for example the total number of spores forming four chains on a single basidium can approach over a 100.  

4 sores

Generally 4, in some fungi its 2, exceptionally 1 (there are good photos to day in the web under "Basidio monosporico" ).

I've never seen basidia with more than 4 spores but I can not exclude it.

http://en.wikipedia.org/wiki/Basidium

http://en.wikipedia.org/wiki/Basidiospore

generally four spores

Basidia produce one set of spores, which to my knowledge can range from 1 to 8 (e.g. Corticiaceae). You sometimes find odd-numbered spores, but the spores are generally produced in pairs.

Thanks for all

http://en.wikipedia.org/wiki/Basidiospore

An interesting example - 6 spores grow from the basidium in fungi of the genus Multiclavula

Dear Amr,

The typical number is 4, but 2 is rather frequent because of dikaryotic spore state (as in Agaricus bisporus) and more than 4 can be observed in heterobasidia (6, 8 or more, as in Tulasnellales) and in the case of yeast-like sporidia formation (basidiospores budding as in smut fungi)

Best regards,

Elena