Wheatfen
A cross section through the thallus
Hyaline colourless cells on the underside of the thallus.
Immature spore capsule (Walnut shape) in upper middle of the image?
Common Crystalwort (Riccia soracarpa)
No spores dropped even at this stage after 90 mins
No spores showed up in a squash from this one either.
Even at this stage there don't seem to be any spores in the Asci?
Peziza Sp
Probably Common Dung Cup (Peziza vesiculosa)
from TM & AC
Everything bar spore size indicates Peziza vesiculosa..morphology, substrate, size etc
Asci tips: strong I+ reaction (Meltzers) & Lugol's Iodine
Paraphyses: numerous, filiform with slightly clavate apex
Spores: 16.6 x 10.2 (n=12) BUT these are either within asci or 'squashed' out. I have failed to get any mature spores to drop.