|Dicyma species comprise a small proportion of the fungal biota. This genus is the asexual phase of Ascotricha which is closely related to Chaetomium. No information is available regarding health effects, or toxicity. Allergenicity has not been studied. Identified on surfaces by tape lifts, and tease mounts from bulk samples. Does not grow on general laboratory media. Dicyma spores could be counted on spore trap samples if the presence of this genus has already been demonstrated (for example, on tape lifts). (Spores are somewhat distinctive but may be confused with other genera.) Sources of growth include dead stems and leaves, paper, cardboard, cotton wool, woody materials and wallboard.