Thirty-three strains of Fusarium species from clinical sources including F. solani, F. oxysporum, F. moniliforme, F. proliferatum,
F. subglutinans and F. chlamydosporum were examined for their physiological characteristics and mycotoxin production. Of this collection
29 exhibited growth at 37 °C and 21 were resistant to cycloheximide. Two strains of F. moniliforme and two strains of F. proliferatum
produced fumonisins. No strains in this collection produced detectable amounts of trichothecenes. All 18 strains of F. solani tested
produced the immunosuppressive agent cyclosporin A. The cyclosporin A-producing ability of clinical isolates of F. solani may
influence their pathogenic potential.