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Arceuthobium americanum
(Dwarf Mistletoes)

Arceuthobium douglasii
(Dwarf Mistletoes)

Arceuthobium laricis
(Dwarf Mistletoes)

Arceuthobium tsugense
(Dwarf Mistletoes)

Chrysomyxa arctostaphyli
(Spruce Broom Rust)

Elytroderma deformans
(Elytroderma Needle Cast )

Melampsorella caryophyllacearum
(Fir Broom Rust)