Black microcolonial fungi (Ascomycetes from Arthonio-, Dothideo-, and Eurotiomycetes) are stress-tolerant persistent dwellers of natural anthropogenic extreme habitats. They exhibit slow yeast-like or meristematic growth, do not form specialized reproduction structures accumulate the black pigment 1,8-dihydroxynaphthalene (DHN) melanin in multilayered cell walls. To understand how live, survive...