Microstroma species comprise a very small proportion of the fungal biota. No information is available regarding health effects or toxicity. Allergenicity has not been studied. May be identified on surfaces by tape lifts, tease mounts from bulk samples, and in air by spore trap samples. (While the spores are only somewhat distinctive, this organism at times becomes airborne with underlying sporulating structures intact, so that the entire organism may be seen on spore trap traces.) In culture Microstroma grows as a yeast. This organism is a plant pathogen, and is common on leaves of Juglans and Carya.