Mucor circinelloides is a dimorphic fungus[1] belonging to the Order Mucorales (Phylum Mucoromycota).

This species is described as not known to be able to produce mycotoxins,[2] however it has been frequently reported to infect animals such as cattle and swine, as well as fowl, platypus and occasionally humans.

[6] The elongate sporangiophores have larger sporangia, which are white at first and progressively turn greenish brown in colour.

[6] On Czapek Yeast Autolysate (CYA) plates, the colony growth is low and sparse, most often spreading across the entire Petri dish.

[2] These colonies of 60 mm diameter or more appear to be pale grey or yellow in colour, with the reverse being uncoloured.

[2] This fungus has also been isolated from various foods such as meat, hazelnuts, walnuts, maize, mung beans, soybeans and barley.

[2] Fungi in the order Mucorales class have not been investigated in detail for their ability to produce mycotoxins;[8] Cytotoxicity and mycotoxin-production was analysed and tested for using the cytotoxicity test (MTT assay) and LC/MS/MS-based multimycotoxin method respectively for three fungal species, including M.

[2] Mucor circinelloides is considered an emerging pathogen, although it has only been associated rarely with very human disease and have been limited to cutaneous infection.