Hosts Prefers aquatic or semi-aquatic habitats.
First recovered from moss on boulders in freshwater streams. Has been found on more than 40 plant hosts, but no damage has been observed and it has never been considered to be a true parasite. Distribution Cosmopolitan, occurring in every continent except Antartica. It seems to prefer the Northern Hemisphere. Has been found in Strawberry Creek, South Fork, of the UC Berkeley campus.