- Gymnosporangium, genus Gymnosporangium - genus of fungi that produce galls on cedars and other conifers of genera Juniperus and Libocedrus and causes rust spots on apples and pears and other plants of family Rosaceae
--1 is a kind of fungus genus
--1 is a member of Pucciniaceae, family Pucciniaceae
--1 has members: apple rust, cedar-apple rust, Gymnosporangium juniperi-virginianae