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General Description

 Colonies. With optimal growth rate at about 36°C, forming dark grey colonies with a dense aerial mycelium and a black reverse. Conidiophores. Comprising individual conidiogenous cells. Conidiogenous cells. Comprising unmodified hyphae. Conidia. Formed laterally or terminally on the hyphae or on short branches, broadly clavate or pyriform, with a truncate base, aseptate, colourless or light brown, 4-7 × 3-4 μm (sometimes referred to as "aleuriospores" or "chlamydospores"). Ascomata. Developing in the mycelial mat, spherical, black, 90-200 μm diam.; ascomatal wall thin, dark, composed of textura epidermoidea or flattened cells, 5-8 μm, irregular in outline and often covered with dark hyphae. Asci. Evanescent, not observed. Ascospores. Fusiform or ellipsoidal, aseptate, brown, 14-19 × 8-10 μm, with a distinct, subapical germ pore. Paraphyses. Not observed. 


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© Ahmed Abdel-Azeem

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