Thanks for your reply, pic below of underside and also pic of lots of tiny ones in a separate area in the grass, not sure if these are the beginnings of the same.
The small ones in the grass are not the same, most lawns have some tiny little brown jobs as I like to call them. The larger mushrooms, well yes I think you have probably guessed correctly they look like honey fungus to me.
There's a photo of bulbous honey fungus (armillaria gallica) in this month's RHS magazine. They look similar to yours but more advanced in the magazine photo. The accompanying text states that a.gallica only attacks weak plants. Could it be breaking down buried remains of an old tree or shrub?
I don't think what you have is armillaria mellea, the aggressive species, but I am no expert.
No, there is no treatment. The primary means of colonising are the black underground rhizomorphs. Spores from fungi landing on freshly cut wood can theoretically infect, so I always remove the toadstools of honey fungus here because I do have the aggressive species, and lots of pruning cuts, wind damaged branches, exposed tree roots etc. This autumn they seem to be very prolific. Others may have different views, but that's what I do, but I don't know if this is worth doing with that species too. I would remove them myself, just in case.
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They look similar to yours but more advanced in the magazine photo.
The accompanying text states that a.gallica only attacks weak plants. Could it be breaking down buried remains of an old tree or shrub?
I don't think what you have is armillaria mellea, the aggressive species, but I am no expert.
The primary means of colonising are the black underground rhizomorphs. Spores from fungi landing on freshly cut wood can theoretically infect, so I always remove the toadstools of honey fungus here because I do have the aggressive species, and lots of pruning cuts, wind damaged branches, exposed tree roots etc.
This autumn they seem to be very prolific.
Others may have different views, but that's what I do, but I don't know if this is worth doing with that species too.
I would remove them myself, just in case.