Two Groups - classifying fungi into ascomycetes and basidiomycetes:
Truffle-like fungi - ascomycetes
In the ascomycete truffle-like fungi the asci may be spread throughout the interior of the fruiting body, embedded in firm tissue or be lined up along the walls of internal chambers. This unidentified species of Tuber , collected in the Australian National Botanic Gardens, has one large spore per ascus, with the asci embedded in the firm internal tissue. The photo shows thin, white veins around areas that are slightly darker and glassy. Those latter areas hold the asci, which are mostly spherical but with a short, tapering "tail". The spherical spores have a net-like surface ornamentation over their surfaces and, diagrammatically, the interior looks a bit like this.
On the other hand, Peziza whitei shows a much more open appearance when cut in half and the asci line the various convoluted surfaces. This almost brings us back to where we started, for in some ways, you could look at this fruiting body as simply an apothecium that has been greatly twisted and folded in various directions.