Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Eurotiales 
   
 
 BCRC Number 32425      
   
 Scientific Name: Emericella nidulans
 
   
   
 Author:

Anamorph: A. nidulellus Samson & W. Gams apud Samson & Pitt, Adv. Penicillium Aspergillus System: 44. 1985.

Emericella nidulans (Eidam) Vui11., C. r. hebd. Seances Acad. sci. Paris 184: 137. 1927.

   
 
 
 
 
 Description: Colony diameters on Czapek’s Agar 5.5-6.0 cm in 2 weeks at 25°C, floccose, marginal mycelium submerged; mycelium white to grey white; conidial heads borne beneath the mycelium, lime green to Kronberg’s green (R., Plate XXXI); reverse colorless to violet brown; soluble pigment pale greyish red; exudate uncolored to yellowish brown; vesicles 7.0-16.4 μm in diameter, pyriform to hemispherical; stipe 32-120 × 3.6-7.2 μm, sinuous or straight, smooth, pale brown to brown. Aspergilla biseriate, metulae covering the upper 1/2 of the vesicle, 4.8-8.8 × 2.0-4.8 μm; phialides 5.2-8.0 × 2.2-4.0 μm. Conidia globose, 2.8-4.0 μm in diameter, roughened. Colony diameters on Malt Extract Agar 6.5-7.0 cm in 2 weeks at 25°C, plane, zonation inconspicuous; mycelium white; conidial heads dark cress green to dark dull yellow-green (R., Plate XXXI, XXXII); reverse uncolored to clay color (R., Plate XXIX). Cleistothecia scattered and abundant, dull yellow globose, 92.0-345.0 μm in diameter, surrounded by Hulle cells. Hulle cells ellipsoidal to globose, 9.0-25.0 μm in diameter. Asci globose to subglobose, 8-spored. Ascospores red to purple, smooth, 3.7-5.6 × 2.8-4.0 μm, with 2 narrow longitudinal flanges, with entire margins somewhat wrinkled, up to 1.1 μm long.
 
 
 
 
 
 Specimens:

Taiwan, Tainan Pref., rare species from stored sorghum seeds, 7 Sep. 1987 (BCRC 32425); stored paddy rice, Chiayi Pref., 1 Mar. 1988.

 
 
 
 Habitat: from stored sorghum seeds; stored paddy rice.
 
 
 
 Distribution:

Taiwan, Cosmopolitian.

 
 
 
 References:

Tzean, SS et al., 1990.

   
   
   
 Provided:

S. S. Tzean and J. L. Chen

 
 
 Note: E. nidulans on MEA produces yellow cleistothecia which rapidly mature and surrounded by globose to ellipsoidal Hulle cells. Ascospores red to purple, bearing two narrow longitudinal flanges.