A patient with very pale patches on his arms and legs is examined at his physician's office. His physician orders a fungal culture. The fungus shows a "spaghetti-and-meatball" appearance on the direct smear. What organism is it?

A recreational cave explorer develops a productive cough and fever. A sputum culture is sent to the laboratory for bacterial, fungal, and mycobacterial cultures. A white mold colony develops on Sabouraud dextrose agar after 5 days at 22° C. Identify the organism from the following:

A young boy develops itchy, dry scaly lesions on his leg with a raised, red, outer edge. A culture of the lesion reveals the following organism in a lactophenol cotton blue stain. This organism is most likely