Learn the the proper usage of all the ways to describe mycorrhiza! MYCORRHIZAL: adj.; of or related to mycorrhiza or mycorrhizae Ex: The relationship formed between some species of fungi and plant roots is a mycorrhizal association. MYCORRHIZA: noun; a symbiotic association (singular) between a fungus and the roots of a vascular host plant. The term mycorrhiza refers to the role of the fungi in the plants' rhizosphere, its root system. Ex: The ericoid mycorrhiza is a mutualis