I think it’s just badly drawn perspective. But a mushroom can sometimes grow out of another mushroom’s head, I’ve seen it.

Looks like an old-timey, not very good illustration. Top left: Parasol, Macrolepiota procera. Top right looks like some kind of bolete. Center are two kinds of Amanita. Middle right looks suspiciously like psylocibe

Oh thanks for sharing. Just had them for lunch from the garden and I love them because they do so well over winter!