Tomentella microspora (P. Karst.) Höhn. & Litsch. 1906

are host of

• Global Biotic Interactions: Helicogonium jacksonii W. L. White 1942

have host

• Global Biotic Interactions: Abies balsamea (L.) Mill. (Sapin balsamier)
• Global Biotic Interactions: Thuja plicata Donn ex D. Don (Thuya géant)
• Global Biotic Interactions: Alnus glutinosa (L.) Gaertn. (Aulne glutineux)
• Global Biotic Interactions: Pinus sylvestris L. (Pin sylvestre)
• Global Biotic Interactions: Betula occidentalis Hook. (Bouleau fontinal)