Phylum：Anamorphic fungi　>>　Class： Anamorphic fungi　>>　 Order： Anamorphic fungi 
   
 
　BCRC Number： 32140      
   
　Scientific Name： Aspergillus flavus
 
   
   
　Author：

Aspergillus flavus Link, Mag. Ges. naturf. Fr. Berlin 3: 16. 1809.
   
 
 
 
 
　Description： Colony diameters on Czapek’s Agar 5.0-5.5 cm in 14 days at 25°C, irregularly furrowed or wrinkled; conidial heads radiate to columnar, strontian yellow, primuline yellow, to deep chrome, or pyrite yellow to olive green (R., Plate XVI, III, IV); mycelium white; exudate colorless; reverse near warm buff or cream-buff to chamois (R., Plate XV, XXX); stipes 110-780 × 5.4-23.0 μm, conspicuously rough, pale brown; vesicles globose, subglobose, pyriform to ellipsoidal, 11.1-60.0 μm wide. Aspergilla usually biseriate, less commonly uniseriate, or with both forms in the same vesicle; metulae or phialides covering 3/4 to the whole surface of the vesicle, metulae 4.0-21.4 × 2.8-9.1 μm, phialides 5.6-13.5 × 2.4-5.4 μm. Conidia globose to ellipsoidal, finely rough to rough, 3.0-5.6 × 2.4-5.1 μm. Sclerotia some-times present, spherical to subspherical, dark brown to black. Colony diameters on Malt Extract Agar 6.5-7.0 cm in 14 days 25°C, plane to floccose; conidial heads radiate to columnar, warbler green, yellowish citrine to serpentine green, or grape green (R., Plate IV, XVI, XLI); mycelium white; reverse uncolored.
 
 
 
 
 
　Specimens：

Taiwan, Taipei City, most common species from soil, 9 Oct 1987; stored soybean seeds, Hwalien City, 11 Feb 1988 (CCRC 32140); stored paddy rice, Nantow Pref., 9 May 1988.
 
 
 
　Habitat： from soil; stored soybean seeds; stored paddy rice.
 
 
 
　Distribution：

Taiwan, Germany, South Pacific Islands.
 
 
 
　References：

Tzean, SS et al. 1990.
   
   
   
　Provided：

S. S. Tzean and J. L. Chen
 
 
　Note： A. flavus is characterized by not floccose colonies, obtaining a diameter of 5.5 cm on CZ in 14 days. Conidia surface ornamentations under LM or SEM are finely rough to rough. In contrast, the closely related species A. parasiticus is characterized by floccose colony, obtaining a diameter larger than 9 cm on CZ in 10 days, and conidial surface ornamentations are very rough.