Malassezia ovalis

Ma·las·sez·i·a o·va·'lis

a species of yeast found in superficial epidermal scales and hair follicles on oily skin, of borderline pathogenicity; may cause seborrheic dermatitis associated with immune deficiency.

Malassezia furfur

A lipophilic yeast associated with tinea vesicolor, seborrhoeic dermatitis, folliculitis or atopic dermatitis. M furfur has also been associated with pneumonia, catheter-associated sepsis and peritonitis. M furfur has been divided into lipid-dependent Malassezia strains: M furfur, M sympodialis, M globosa, M obtusa, M restricta and M slooffiae.