Yellow Dicolouration 

Chrysomyxa arctostaphyli
(Spruce Broom Rust)

Heterobasidion annosum
(Annosus Root and Butt Rot)

Hypodermella laricis
(Larch Needle Blight)

Melampsora albertensis
(Conifer - Aspen Rust)

Melampsora abieti-capraearum
(Willow - Conifer Rust)

Melampsora epitea
(Willow - Conifer Rust)

Melampsora tsugae
(Willow - Conifer Rust)

Melampsora paradoxa
(Willow - Conifer Rust)

Melampsora ribesii-purpureae
(Willow - Conifer Rust)

Melampsora occidentalis
(Conifer - Cottonwood Rust)

Melampsorella caryophyllacearum
(Fir Broom Rust)

Meria laricis
(Larch Needle Cast)

Mycosphaerella pini
(Dothistroma Needle Blight)

Naohidemyces vaccinii
(Hemlock - Blueberry Rust)

Phellinus weirii
(Laminated Root Rot)

Pucciniastrum epilobii
(Fir - Fireweed Rust)

Rhabdocline pseudotsugae
(Douglas-fir Needle Blight)

Rhytisma punctatum
(Tar Spot of Maple)

Taphrina populi-salicis
(Other Broadleaf Foliar Diseases)