Trichophyton tonsurans is unique because of the marked size and morphological variability of its microconidia which may be round, tear-shaped, cigar-shaped, or swollen and enlarged.
The top right image shows a T. tonsurans culture plate demonstrating at the center of the colony a wrinkled appearance, though, overall, the colony exhibits a glabrous or smooth velvety appearance, as well as its characteristic yellowish-beige coloration. The bottom right image shows a T. tonsurans lactophenol cotton blue preparation demonstrating macroconidia and filamentous hyphae.
34. CDC. Image #15510. This photograph of a Petri dish culture revealed some of the morphology exhibited by a Trichophyton tonsurans fungal colony. Though at its center, the colony displayed a wrinkled appearance, note that overall, the colony exhibited a glabrous, velvety appearance, and a characteristic yellowish-beige coloration. PHIL public domain. No date. Accessed January 14, 2023. https://phil.cdc.gov/Details.aspx?pid=15510 35. CDC. Georg. Image #15410. Under a magnification of 475X, this photomicrograph revealed some of the ultrastructural characteristics of the dermatophytic fungus, Trichophyton tonsurans. Of note, were the numbers of the organism’s elongated, multicellular macroconidia, and filamentous, septate, hyaline hyphae. PHIL public domain. Created 1969. Accessed January 14, 2023. https://phil.cdc.gov/Details.aspx?pid=15410
