Species*;"G. crassivaginata (Griffin 1968), holotype DAOM 110144)";"G. crassivaginata (Jacobs and Wingfield 2001), holotype DAOM 110144)";"G. crassivaginata (Upadhyay 1981), RWD 858, WIN(M) 69-12";"G. crassivaginata (this study, CBS119144)";"L. piriforme (Greif et al. 2006)";"L. alneum sp. nov." "Sexual state";Present;Present;Present;Absent;Unknown;Present "Ascomata base";40–90;40–90;35–110;;;59–108 "Ascomatal neck length (μm)";40–60;40–60;"37–70 including ostiolar hyphae";;–;"58–114 excluding ostiolar hyphae" "Ostiolar hyphae length (μm)";"10–25, septate";–;septate;;;"14.6–22.7, non-septate" "Ascospore shape";"Falcate in side view, fusiform in face view";Fusiform,;"Falcate in side view, fusiform in face view";;–;"Falcate in side view, fusiform in face view" "Ascospore size (in face view, μm)";"5–7 × 1.excluding sheath, 10–11.5×5–6.5 including sheath";"10–11 × 5–6 including sheath";"9–12 × 5–7 including sheath";;–;"6.9–10.3 × 1.8–3.3 excluding sheath, 8.9–12.2 × 4.5–7 including sheath" "Conidiophores length (μm)";"to 50";"25–105 (-120)";"to 85";(28.6–)33.2–63.2(–109.1);;(48.1–)59.3–84.2(–102.9) "Stipe length (μm)";;8–60(-85);;(5.6–)3.7–26(–58.6);7–45.6;(7.6–)14.3–39.2(–48.5) "Conidiogenous apparatus length (μm)";;"15–55 (-60)";;(22.3–)27–41.3(–54.7);;(20–)26.5–38.6(–48.7) "Conidial shape";"Cylindrical to allantoid";"Oblong to obovoid";"Clavate, curved";"Oblong to allantoids, often clavate";Curved;"Cylindrical to allantoid" "Conidial size (μm)";"3–6 × 1–1.5";4–10×1–2;"2.5–12 × 1–2";"(2.4–)3.2–5(–8.1) × (0.7–)0.9–1.3(–1.7)";"2.4–4.6 × 1.0–1.4";"(3.2–)3.7–5.9(–9.7) × (0.8–)1–1.8(–2.8)" "Club-shaped cells size (μm)";"12–20 × 8–12 on short hyphal branches";–;"9–23 × 7–14 on immersed hyphal branches";"(6.5–)8.5–14.1(–18.5) × (5–)6.5–10.8(–13.5), born terminally or laterally on a non-septate or 2–3 septate stalk, 4.8–41.5 long, 2.5–7.3 wide below primary septa";"14.4–31.2 × 7.2–16., borne on a one- to four celled stalk, 7.2–45.6 × 4.8–7.2";"(11.5–)14.8–25.6(–33.3) × (7.7–)11.3–15.1(–18.2), born terminally on a multicelled stalk, 7.2–124.2 long , 4.4–9.7 wide below primary septa" "Colony color and optimal growth temp on MEA";"Brown, -";"Olivaceous, 30,";"Pale to dark brown or chaetura brown, -";"Olive brown, 30";"Light brown, 35";"Brownish grey, 30" "Radial growth rate (mm/d) at optimum";–;–;;"6.9 mm";–;"8.8 mm" Host;"Picea mariana, Populus grandidentata, P. tremuloides";"Picea mariana, P. glauca, Pinus resinosa, P. sylvestris, P. strobus, Fraxinus nigra, Populus grandidentata, P. tremuloides";"Populus tremuloides";unknown;"Unknown (Greif et al. 2006); Pinus sylvestris (Jankowiak and Kolařík 2010); Betula verrucosa (Jankowiak et al. 2019c); Populus tremula (this study)";"Populus tremula, Malus sylvestris (Jankowiak et al. 2019a, this study)" Arthropods;Unknown;;–;Unknown;"Coleoptera, Diptera, Araneae, Acari, Hemiptera, Lepidoptera, Collembola, Psocoptera, Trichoptera, and Hymenoptera: Formicidae, D. alni (this study)";"Dryocoetes alni, Scolytus mali" Distribution;"Ontario, Canada";"Ontario, Canada,USA";"Fort Collins, Colarado (USA), Monitoba (Canada)";Unknown;"Alberta, Canada, Poland";Poland