Melampsora humboldtiana Speg. 1912

have host

• Global Biotic Interactions: Salix cordata Michx. (heartleaf willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Salix rubra
• Global Biotic Interactions: Salix bebbiana Sarg. (Bebb willow)
• Global Biotic Interactions: Salix discolor Muhl. (pussy willow)
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Salix lucida Muhl. (Pacific willow)
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Abies lasiocarpa (Hook.) Nutt. (subalpine fir)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Salix humilis Marsh. (prairie willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix humboldtiana Willd. (Humboldt's willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Abies concolor (Gordon) Lindl. ex Hildebr. (white fir)
• Global Biotic Interactions: Salix fragilis L. ()
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix discolor Muhl. (pussy willow)
• Global Biotic Interactions: Salix monochroma Ball (One-Color Willow)
• Global Biotic Interactions: Abies concolor (Gordon) Lindl. ex Hildebr. (white fir)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix pyrifolia Anderss. (balsam willow)
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Salix cordata Michx. (heartleaf willow)
• Global Biotic Interactions: Salix cordata Michx. (heartleaf willow)
• Global Biotic Interactions: Salix discolor Muhl. (pussy willow)
• Global Biotic Interactions: Salix fragilis L. ()
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Abies balsamea (L.) Mill. (Balm of Gilead)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix alba L. (White Willow)
• Global Biotic Interactions: Salix prolixa Anderss. (MacKenzie's willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix humboldtiana Willd. (Humboldt's willow)
• Global Biotic Interactions: Salix humboldtiana Willd. (Humboldt's willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix glaucosericea B. Flod.
• Global Biotic Interactions: Salix humboldtiana Willd. (Humboldt's willow)
• Global Biotic Interactions: Salix humboldtiana Willd. (Humboldt's willow)
• Global Biotic Interactions: Salix cordata Michx. (heartleaf willow)
• Global Biotic Interactions: Salix purpurea L. (purple willow)
• Global Biotic Interactions: Abies balsamea (L.) Mill. (Balm of Gilead)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix humilis Marsh. (prairie willow)
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Salix bebbiana Sarg. (Bebb willow)
• Global Biotic Interactions: Salix pedicellaris Pursh (bog willow)
• Global Biotic Interactions: Abies balsamea (L.) Mill. (Balm of Gilead)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix cordata Michx. (heartleaf willow)
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Salix scouleriana Barratt (Scouler's willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Salix alba L. (White Willow)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix pyrifolia Anderss. (balsam willow)
• Global Biotic Interactions: Salix gooddingii C. R. Ball (Goodding's willow)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix ambigua
• Global Biotic Interactions: Salix amygdaloides Anderss. (peachleaf willow)
• Global Biotic Interactions: Abies balsamea (L.) Mill. (Balm of Gilead)
• Global Biotic Interactions: Abies grandis (Douglas ex D. Don) Lindl. (Giant Fir)