This photograph depicts the frontal view of a Petri dish within which fungal colonies of Trichophyton rubrum var. granulare had been cultured. Revealed is the colonial morphology, which in the case of T. rubrum is said to be waxy, glaborous, i.e., flat to cottony, and display from a frontal perspective, a white to bright yellowish-beige, and even a red-violet coloration. From the reverse (see PHIL 10541) or from the back, the colonies display a coloration that is a light yellowish to brown, or a reddish brown.
CDC/ Dr. Libero Ajello
December 1, 2012
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