Plums and custard? The gps is 6cm long. fungus is wrong colour for the tricholomopsis but gills remind me of it with their hint of yellow. It was growing on a heap of rotting conifer stumps.
No identification made yet.
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... is a GPS, Mike? What brand, pray tell?
Its written on there if you zoom in, its quite expensive but the similar cheaper ones i have tried have fallen to bits after only a handful of uses, the first one of these i had lasted more than 2 years regularly used and only stopped using it when the battery sometimes ran out quickly (you can't replace the rechargable battery). lasts all day and just plug into usb to recharge.
Probably a ridiculous suggestion but what about Tapinella atrotomentosa? The cap is not quite right but it has gills and grows on conifer stumps.
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Interesting, I had the same thought when i was initially trying to ID before upload to ispot but could not see any hint of the darker stem, see additional photo. Also all the specimens of Tapinella I've seen have been in scotland or other places well north of here, I am not sure if it is a particular northern species or not though.
Leif Goodwin has a record in Berkshire. Have you considered Gymnopilus? G hybridus grows on conifer stumps.
Don't think its Gymnopilus hybridus, that tends to be rather smaller, the cap on this was 12-15cm across.
Lat/Lng: 51.9646, -0.662963
OS grid ref: SP919304