Mushrooms in a petri bowl shows it amazing mycelium

If you cultivate a mushroom in a petri bowl on agar, its actual “shape” becomes visible. The essential part of a mushroom, the Mycel, is usually hidden from our eye. What we perceive as a “mushroom” is only its transient fruit body.

The mushroom's main body is the mycelium, a network of thread-like structures called hyphae, which live underground or within the substrate (like wood or soil). The mycelium is the organism's true form and is typically hidden from view.

When you grow mycelium on an agar plate in a petri dish, its network becomes visible as it spreads across the medium. What we commonly recognize as a "mushroom" is actually just the fruiting body, which the mycelium produces to release spores for reproduction. This fruit body is temporary and only appears when conditions are right, while the mycelium can persist for years.