Some members of the genus can invade homes and are a sign of moisture because the mold requires water to thrive.

Several DNA-based phylogenetic studies place Ulocladium convincingly within Alternaria, suggesting that the latter is the correct classification for these species.

[1] However, Ulocladium, unlike Alternaria, do not produce alternariols, tenuazonic acid, altersolanols, or macrosporin.

Conidia are black, rough, with pointed base when young, with both transverse and longitudinal septae, single or in a short chain (only in U. chartarum).

Conidiophores are pale brown, erect, multicelled, and develop conidia in a sympodial mode.