crustosum,[1] Penicillium solitum var.

It is identified by its complex biseriate conidiophores on which phialides produce asexual spores.

It can grow at fairly low temperatures (it is a psychrophile), and in low water activity environments.

[4] In addition, P. crustosum can produce thomitrems A and E, and roquefortine C.[5] Consumption of foods spoiled by this mold can cause transient neurological symptoms such as tremors.

[6] In dogs, symptoms can include vomiting, convulsion, tremors, ataxia, and tachycardia.