What is "chrysomyxa"

Chrysomyxa is a genus of rust fungi in the family Coleosporiaceae. The genus, widespread in the Northern Hemisphere, contains about 23 species. Rust fungi in the genus Chrysomyxa Unger occur in boreal forests of the northern hemisphere on Pinaceae, (mostly Picea A. Dietr.), and most species alternate to angiosperm hosts in the Ericaceae (Crane 2001).