What are Juniper and Heptacodium?
Juniper Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, between 50 and 67 species of juniper are widely distributed throughout the Northern Hemisphere, from the Arctic, south to tropical Africa, from Ziarat, Pakistan east to eastern Tibet in the Old World, and in the mountains of Central America. The highest-known Juniper forest occurs at an altitude of 16000 ft in south-eastern Tibet and the northern Himalayas, creating one of the highest tree-lines on earth.
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.