Definitions for "Alternate Host"
One of two taxonomically different hosts required by a heteroecious rust fungus to complete its cycle; also applies to some insects.[1] Fin. Swe.
refers to the rust fungi; where two or more hosts are required for the rust fungus to complete its life cycle.
One of two kinds of plants on which a parasitic fungus (e.g., rust) must develop to complete its life cycle.