(Vuillemin) Tiraboschi, 1926
Colonies on potato dextrose agar at 25°C are variously colored (versicolored) and may range from very pale green, to greenish-beige, pinkish-green, salmon green, or dark green. Reverse is reddish to uncolored. Exudate, when present, is pink to reddish-brown. The growth rate is slow to moderate.
Hyphae are septate and hyaline. Conidial heads are biseriate and loosely radiate. Conidiophores measure 120-700 µm in length, are hyaline to pale brown, smooth-walled and brittle (can see where many have “snapped off”). Vesicles are small (approximately 9-16 µm in diameter) and variably shaped, with metulae and phialides covering most of the vesicle. Reduced conidial structures resembling those seen in Penicillium species are common. Conidia measure 2.5-3 µm in diameter, are globose, and may be fine to distinctly roughened. Globose Hülle cells may also be present. Restricted growth at 35°C [531, 1215, 1875, 2202].
Aspergillus versicolor has been reported as an agent of cutaneous disease, , onychomycosis, otomycosis [521, 1972], osteomyelitis, pulmonary disease, and a mycetoma-like granuloma in a horse. Its mycotoxin, sterigmatocystin, has been studied in foodstuffs[1738, 1892] and in damp indoor environments.
FTL* in vitro susceptibility data
|0.5 µg/ml=1||0.03 µg/ml=1||0.125 µg/ml=1||0.25 µg/ml=2||0.03 µg/ml=1||16 µg/ml=1|
|1.0 µg/ml=1||0.06 µg/ml=2||0.25 µg/ml=1||0.5 µg/ml=3||>64 µg/ml=9|
|2.0 µg/ml=5||0.25 µg/ml=1||0.5 µg/ml=3||1.0 µg/ml=2|
|4.0 µg/ml=1||4.0 µg/ml=1||1.0 µg/ml=2||2.0 µg/ml=2|
|8.0 µg/ml=1||32 µg/ml=1||4.0 µg/ml=1|
* Fungus Testing Laboratory unpublished data (NCCLS M38-A)