Hi Adam
I didn’t personally see a clear volva however there may have been a less distinct one present. On this occasion I refrained from uprooting or collecting the fungus, except for a tiny portion of the cap for a spore deposit. I normally wouldn’t do this however it is a very special reserve and there was only a single fruiting body. It’s a well recorded reserve too, so I’m sure that there’s a high chance of the species, whatever it is, already being recorded here.
On other occasions, when it’s not on a special reserve or there is more than one fruiting body, I would have uprooted it to see the gills.
James