It turns out that fungus growing termites sometimes cultivate Termitomyces titanicus. This is an excellent scientific name.
CORRECTION:
I assumed they had to work like ants. Wrong! (A fruiting body would only emerge from a dead ant colony not so with these termites) Something about macrotermitinaes nuptial flights stimulates mushroom fruiting. (!) They get covered in pink spores.
And you can eat it!
Hence the species name.
The fungi farmed by ants (Leucoagaricus gongylophorus) also produces mushrooms when their colonies die out. This fungi can't survive without the ants and the ants propagate it by carrying it with them when they found new nests:
So what is the purpose of the mushrooms?
Is it just a hold-over from the days before the fungi was dependent on ants?
I've been trying to find out if you can eat the ones that grow on old ant nests.
It's never really found just living on its own without ants to take care of it?
Ants keep it clean, set the correct humidity, feed it plant matter...
In fact, many antkeepers have tried to farm it (so they have extra fungi for their pet ants) and it's basically been impossible for people to do it, even with clean rooms, carefully cut leaves and humidity chambers.
It's totally dependent on ants.
Now... could it maybe float as spores and join an existing ant colony? Maybe? IDK
@futurebird @PetraOleum i used to work on this in grad school - hard fungus to collect!
The fungus packs the hyphal swelling that it feeds to the ants with enzymes to degrade plant material. The ants eat the hyphal swellings, and then defacate on fresh plant material as they bring it into a nest. This is perhaps one reason why the fungus can't live alone now - it needs the ants to pre-treat the leaves with these enzymes in order to grow efficiently. Bizarre stuff!
myrmepropagandist
Petra
Frank Aylward