Phylum:Anamorphic fungi >> Class: Anamorphic fungi >>  Order: Anamorphic fungi 
   
 
 BCRC Number 32125      
   
 Scientific Name: Aspergillus avenaceus
 
   
   
 Author:

Aspergillus avenaceus G. Smith, Trans. Br. mycol. Soc. 25: 24. 1943.

   
 
 
 
 
 Description: Colony diameters on Czapek’s Agar 5.5-6.0 cm in 10 days at 25°C; mycelium white; reverse uncolored to pale greyish pink or black under sclerotial areas; exudate clear; conidial heads radiate to globose or splitting into several loose columns, reed yellow to olive-yellow or buffy olive (R., Plate XXX); stipes smooth to rough, 400-4000 × 8.0-26.0 μm. Aspergilla uniseriate or biseriate; vesicles globose to subglobose, 16.0-133.0 μm in diameter; metulae covering the entire surface of the vesicle, 6.4-22.4 × 3.4-10.4 μm; phialides 5.6-11.2 × 2.8-5.0 μm. Conidia ellipsoidal, smooth to finely rough, 3.2-6.4 × 2.7-5.2 μm. Sclerotia abundant, scattered in zones, elongate, ovoid to obpyriform, or irregularly shaped, dark greyish brown to black, but with white to gray apical portion during development. Colony diameters on Malt Extract Agar 7.0-7.5 cm in 10 days at 25°C; conidial heads olive-yellow (R., Plate XXX), or greyish yellow to olive; mycelium white. Sclerotia black or black dark- magenta (R., Plate XXVI), ovoid to elongate ovoid up to 2 mm long, 1 mm wide; reverse uncolored to pale pinkish.
 
 
 
 
 
 Specimens:

Taiwan, Hwalien Pref., common species from stored paddy rice, 30 Dec 1985 (CCRC 32125); stored paddy rice, Changhwa Pref., 8 Aug 1986; soil, Pingtung Pref., 18 Jun 1989.

 
 
 
 Habitat: from stored paddy rice; soil.
 
 
 
 Distribution:

Taiwan, South Africa, UK.

 
 
 
 References:

Tzean, SS et al. 1990.

   
   
   
 Provided:

S. S. Tzean and J. L. Chen

 
 
 Note: Conidial heads on Czapek’s Agar reed yellow to olive-yellow or buffy olive; scle-rotia abundant; conidia ellipsoidal, smooth to finely rough.