Aspergillus versicolor (Vuill.) Tirab.

IMI 229970

Macroscopic characters

Colony diameter after seven days incubation on CYA at 25°C 17-27 mm; conidia dull green to grey green (26-28C-D3-4); exudate red, brown, or uncolored; reverse brown to red-brown; soluble pigment absent or red-brown. Colonies on MEA 17-22 mm in diameter; conidia green to dull green; exudate and soluble pigment absent; reverse yellow to red-brown. Colonies on CY20S 17-30 mm in diameter; conidia few (grey-green) or absent; exudate absent; reverse reddish brown to yellow; soluble pigment uncolored or colored as reverse. Colonies on CZ 12-20 mm in diameter; conidia pale green or absent; exudate absent or reddish-brown; reverse reddish brown; soluble pigment uncolored or colored as reverse. Colony diameter on CYA at 37°C 0-1 3 mm.

Microscopic characters

Stipes 200-450 um long, smooth-walled, uncolored to pale brown. Vesicles pyriform to spathulate, 9-12 um wide, hyaline to pale brown. Aspergilli biseriate. Conidia 2.0-3.5 um in diameter, globose to sub-globose, walls finely rough to rough.

Note

As the name of this fungus implies, the conidia A. versicolor may be of various colors. This species is very common and displays great variability in colony pattern and size.

Plate 9. Aspergillus versicolor (Vuill.) Tirab. IMI 229970

A. Colony on CYA, 7 days at 25°C.
B. Macrograph of the conidial heads showing radiate heads.
C-D. Conidiophores: C. 1200x; D. 1900x.
E. Conidia 1400x.

Aspergillus Reference Cultures