WHAT ARE MYCORRHIZAE?
A mycorrhiza is formed when a fungus and a plant root combine. This combination is termed a mycorrhizal association.
It is important to understand that a mycorrhiza is neither a root nor a fungus but a distinct and separate entity that is created by the coming together of the two. The fungus infects the root and is literally a "fungus root" derived from Greek words; mykes - mushroom or fungus, and rhiza - root.
In addition, the fungus part of the mycorrhizae sends out a very fine network of cotton-like strands, almost like roots themselves. This network consists of individual strands called hyphae. These strands of hyphae collectively form a huge network called a mycelium. This mycelium network is easily seen by turning over rotting leaves in a woodland. The mycelium network is the white velvety coating on the rotting vegetation.
With cotton-like strands