Tropohalonectria suthepensis (Promp.) R.H. Perera, E.B.G. Jones & K.D. Hyde, Phytotaxa 278(2): 128. 2016. (Type species).

Ascomata perithecial, immersed, solitary to gregarious, globose to subglobose, dark brown, 180–300 × 300–600 μm, with a yellow to light orange, cylindrical neck, 400–800 × 120–180 μm. Paraphyses numerous, unbranched, filamentous, septate, hyaline. Asci 8-spored, unitunicate, cylindrical, 135–170 × 5–8.5 μm, with a refractive apical ring, 2–5 × 2–3 μm. Ascospores parallel in ascus, filiform, slightly curved, 4–7-septate, hyaline, yellow to light orange, smooth, 85–137 × 2.5–3 μm. Asexual state harpophora-like. On PDA, hyphae mostly immersed, light brown to light yellow. Conidiogenous cells phialidic, ampulliform to lageniform, 10–19 × 3.5–5 μm, with a cylindrical collarette, 1–2 μm diam. Conidia allantoid, curved, aseptate, hyaline, 10–19 × 1.5–2.5 μm (Description from Promputtha et al., 2004).

Typification: Holotype PDD76762.

Gene sequences: DQ341490 (18S), DQ341513 (28S).

Hosts/substrates: On dead leaves of Magnolia liliifera (Magnoliaceae).

Distribution: Thailand.