-ˌimpə(r)ˈfekˌtī noun plural
Usage: capitalized F&I
Etymology: New Latin, literally, imperfect fungi
: a large and heterogeneous group of fungi comprising forms whose life cycle is imperfectly known or lacks the sexual stage, including many that are undoubtedly ascomycetes or more rarely basidiomycetes for which the perfect stage exists but has not been identified, and being usually divided among the orders Sphaeropsidales, Melanconiales, Moniliales, and Mycelia sterilia