There is a myth that immediately after heavy rains in forest, mushrooms appear in large number and make a very large ring or circle, which may be several metres in diameter. These are called as 'fairly ring'. Can you explain this myth of fairy rings in biological terms ?
Discuss the mycilial structure in Agaricus and its soil borne nature.

Explanation

### Step-by-Step Solution:

1. **Understanding the Myth of Fairy Rings**:
- The myth states that mushrooms appear in large numbers after heavy rains, forming a circular pattern known as a "fairy ring." This phenomenon is often observed in forested areas.

2. **Biological Explanation**:
- In biological terms, fairy rings are formed by certain types of fungi, particularly those in the genus Agaricus. The fruiting bodies of these fungi, known as basidiocarps, emerge from a mycelial network that is present in the soil.

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