It is a type of yeast. Yes Found in decaying organic matter and composting. It is related to Helminthosporium. Yes Found in grasslands and agricultural areas. Also found in textiles and foodstuffs.
Spores tend to be highest in dry autumn times.
No Plant pathogen and spoilage organism. Spores tend to be highest during wet weather. It is related to Cladosporium. It is a type of yeast. It is difficult to distinguish from Aspergillus by microscope.