'Fungi Imperfecti' definitions:

Definition of 'Fungi imperfecti'

noun

Large and heterogeneous form division of fungi comprising forms for which no sexually reproductive stage is known [syn: Deuteromycota, subdivision Deuteromycota, Deuteromycotina, Fungi imperfecti, subdivision Deuteromycotina]

From: GCIDE

Fungi Imperfecti \Fun"gi Im`per*fec"ti\, pl. [L. imperfecti imperfect.] (Bot.) A heterogenous phylum of fungi which lack a sexual phase, or of which the sexual phase is not known. Some undoubtedly represent the conidium stages of various Ascomycetes. It is not considered a natural phylum, and is also called the Deuteromycota. The group is divided into the orders Sph[ae]ropsidales, Melanconiales, and Moniliales. It includes the genera Penicillium and Aspergillus, which reproduce asexually by means of conidia. [Webster 1913 Suppl. +PJC]