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General Description

 Colonies. Heterothallic. Flat to folded, with a downy to powdery surface, cream to orange-tan; reverse with or without diffusable vinaceous red pigment that becomes bluish-black with age. Conidia. Of two types: "macroconidia", abundant, cylindrical to fusiform, 8- to 12-septate, thick-walled, smooth, 18-60 × 8-12 μm; "microconidia" sometimes present, pyriform to obovate, 3-9 × 2-5 μm. Ascomata. Globose, pale buff, 300-900 μm diam. excluding appendages; peridial hyphae pale yellow, colourless, septate, uncinately branched, usually to the outside of the main hyphae; cells thick-walled, strongly echinulate, symmetrically dumbbell-shaped, 7-11 × 4-7 μm; appendages septate, smooth-walled spirals that vary considerably in length and number of turns, borne terminally; smooth, multiseptate, fusiform "macroconidia" sometimes produced by peridial hyphae. Asci. Subglobose, thin-walled, evanescent, 5.4-7.2 × 5-6.5 μm, 8-spored. Ascospores. Colourless, smooth, oblate, 2.5-3.2 × 1.8-3 μm, yellow in mass. 


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© Ahmed Abdel-Azeem

Partner Web Site: Cybertruffle

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