Neither my books nor a Web search helps. We have a Peziza (almost
certainly) growing in our drive, probably on conifers, with a
shining white interior and a buff exterior. Also, it cracks open,
irregularly, and is 1.5"-2.5" across.

Any ideas? I doubt that a photograph would help, not least as it
is very hard to get a good one.


Regards,
Nick Maclaren.