Structure and Function

Structure

Tuber magnatum has irregular shape, it is known to be blobs or patches. Abnormally, they're times when the truffle comes in a more or less spherical shape than any other shape. In the picture below the truffle looks similar to a potato. After the soil is washed off, the truffle comes in a light, creamy brown colour.

Tuber magnatum, "white truffle".
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Function

This fungi has a symbiotic relationship with  specific trees. The fungus grows into the roots and that helps the plant that the rots belong to tolerate the environment, by providing the plant with the ability to intensify absorption of phosphorus from the soil surrounding it. In return, the plant gives the fungus nutrients such as metabolites so that it can grow.