Cladosporium conidia

Cladosporium conidia are lightly-pigmented and form in chains, which may branch. Individual conidia typically have two attachment scars, but may have three if there is a branch point. Spores may be unicellular or multicellular with one, two, or rarely three septa. Depending on the species, the size and shape are varied, and the conidial wall may be smooth or ornamented. Occasionally, large clumps of Cladosporium conidia are seen in air samples.