Use
A mycelial micro-fungus or a visible growth of such a fungus is called mould. a blue mould or a green mould is caused by penicillium spp., a grey mould by botrytis cinenu, a sooty mould by one of the members of family capnodiaceae. The term is, however, sometimes used incorrectly for the growth of cludosponzun spp. and other fungi giving black powdery appearance on foliage.