Mt. Shasta Arnica

Arnica viscosa A. Gray

are host of

• Global Biotic Interactions: Cyathicula cyathoidea (Bull.) Thüm. 1874
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Pleospora herbarum
• Global Biotic Interactions: Apiosporella alpina Wehm. 1946
• Global Biotic Interactions: Leptosphaeria heterospora (De Not.) Niessl 1879
• Global Biotic Interactions: Lachnum relicinum (Fr.) P. Karst. 1871
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Trichopezizella setigera (W. Phillips) Raitv. 1970
• Global Biotic Interactions: Mollisia polygoni (Lasch ex Rehm) Gillet 1882
• Global Biotic Interactions: Leptosphaeria sclerotioides (Preuss ex Sacc.) Gruyter, Aveskamp & Verkley 2012
• Global Biotic Interactions: Leptosphaeria doliolum (Pers.) Ces. & De Not. 1863
• Global Biotic Interactions: Trematosphaeria pertusa Fuckel 1870
• Global Biotic Interactions: Leptosphaeria doliolum (Pers.) Ces. & De Not. 1863
• Global Biotic Interactions: Pleospora anthyllidis Auersw. & Niessl 1876