Is Rust On Metal A Fungus?

Is Rust On Metal A Fungus? Rusts Division: Basidiomycota Class: Pucciniomycetes Order: Pucciniales Families Are Rusts and Smuts fungi? The rusts and smuts are perhaps the most economically important fungal plant pathogens. The rusts and smuts may be recognized by the bright orange pustules and the black powdery appearance of the host plant, respectively. Left