Two New Aspergillus nidulans Group Members from Wyoming Soils

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Abstract
Two new species in the A. nidulans group are described and compared with known related taxa. A. spectabilis sp. nov. [also described was the perfect state Emericella spectabilis sp. nov.] it with tall conidiophores, broad green conidial columns and early-ripening cleistothecia shallowly embedded in a vinaceous Hulle-cell crust, may be most closely related to A. multicolor, A. crustosus (both nonascosporic), A. striatus and E. desertorum. A. bicolor sp. nov. [also described was the perfect state Emericella bicolor sp. nov.] is distinctive among all other recognized species in the complex in its development of tall conidiophores and columnar green heads on dilute media and in its production on malt agar of a floccose yellow felt which forms vinaceous Hulle-cell-cleistothecium aggregations aerially after growth for 4-6 wk. Ascospores in the latter species are produced sparingly, mature at 2-3 mo, are orange red, smooth or delicately roughened and have very low equatorial crests.

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