What are Juniper and Heptacodium?
Heptacodium Heptacodium is a genus of plant in family Caprifoliaceae, comprising just the one species found in China:
Gymnosporangium clavipes Gymnosporangium clavipes is a plant pathogen, a fungus that causes cedar-quince rust. Similar to "Gymnosporangium juniperi-virginianae" and "Gymnosporangium globosum", the fungus infects a wide range of Rosaceae, such as apple, hawthorn and quince trees, and also requires an evergreen host such as Eastern Red Cedar or a number of other juniper species to complete its life cycle.