Illosporiopsis christiansenii is a species of fungus that parasitizes lichen which is found in Europe and North America. It was first described as Hobsonia christiansenii.
Description Illosporiopsis christiansenii can be identified by its bright pink conidia, approximately 0.5–1 mm across and 0.2–2 mm high, which contrast strongly with the lichen it parasitizes. It is only known to reproduce asexually.
Distribution Illosporiopsis christiansenii is found throughout Europe and North America.
Habitat Illosporiopsis christiansenii parasitizes lichen, including Parmelia, Physcia and Xanthoria.
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