Help with ID pelase???

[ohgreatstew]

Found on opoen untreated medow, cap around 60mm stem 100mm, no ring, thought it was Agaricus Dulcidulus but this has a ring so can't be, been cap colour is kind of a dirty brown, hint of grey starting to split around the edges of the cap, step firm not hollow..... any ideas???


Thanks Stewart

[Ditiola]

I do not think this is an Agaricus either.

Peter

[ashgale]

could it be an Inocybe species ?

ashgale.

[Ken Burgess]

With free gills and no ring on the stem that limits the options. I think it probably has pink spores and would have had a volva but this has been largely lost on being collected. I think there is a trace of the volva on the bottom of one stem. I'd say it was Volvariella and probably Volvariella gloiocephala.

Ken

[ohgreatstew]

Sorry Ken, I did a spore print overnight and it is bright rust brown/orange, really quite vibrant, also no volva, have double checked as there are sevral specimens, nothing left in the ground, although I know of 3 of these they do not gtrow together, always single always in grass, a couple near hazel, but they do have the spliting to the edge of the cap similar to some of the Inocybe, but most of them are said to be in woods......!

[ohgreatstew]

Sorry Ken, I did a spore print overnight and it is bright rust brown/orange, really quite vibrant, also no volva, have double checked as there are sevral specimens, nothing left in the ground, although I know of 3 of these they do not gtrow together, always single always in grass, a couple near hazel, but they do have the spliting to the edge of the cap similar to some of the Inocybe, but most of them are said to be in woods......!
Here is a close up of the cap....

[Ken Burgess]

Originally Posted by ohgreatstew

Sorry Ken, I did a spore print overnight and it is bright rust brown/orange, really quite vibrant,

That leaves you with a major problem then. Your photos show specimens with gills that are clearly free from the stem - you can see this both in the cross section and the upside down cap. I am not aware of any species with a rust brown spore print and free gills. In any event, Inocybe is ruled out because this genus does not have rust brown spores.

It can't be Agaricus because that genus has dark brown spores and it can't be Lepiota s.l. because that genus has white or pale coloured spores.

The only other likely options are Pluteus and Volvariella, the former without a volva and the latter with a volva. Both these genera have pink to pinkish-brown spores, although in Pluteus the spore print can sometimes appear more brown than pink.

The only way to take it further would be with microscopy.

Ken