Mytilinidiales » Mytilinidiaceae » Lophium

Lophium zalerioides

Lophium zalerioides Jun F. Li, Phook., Camporesi & K.D. Hyde, in Hyde et al., Fungal Diversity 87: 65 (2017)

Index Fungorum number: IF 553197; Facesofungi number: FoF 03286

Etymology: the specific epithet ‘‘zalerioides’’ refers to its conidia resembling Lophium arboricola (Zalerion arboricola).

Holotype: MFLU 14-0436

Saprobic on cone of Cupressus glabra Sudw. (Cupressaceae). Sexual morph: Undetermined. Asexual morph: Colonies effuse, dark brown to black. Mycelium partly immersed and partly superficial, smooth, becoming verrucose when old, thin-walled, sub-hyaline to dark brown hyphae. Conidiophores 11.1–14.8 μm long × 2.1–2.4 μm diameter (x̄ = 12.9 × 2.5 μm, n = 20) macronematous, mononematous, solitary, straight to flexuous, light brown to brown, branched, thick-walled, septate, smooth, solitary. Conidiogenous cells 2.1–2.6 μm long × 1.8–2.2 μm diameter (x̄ = 2.4 × 2.5 μm, n = 10) monoblastic, integrated, terminal, determinate, pale brown. Conidia 13.1–41.6 μm long × 13.5–25.9 μm diameter (x̄ = 27.9 × 19.5 μm, n = 10), irregularly helicoid or coiled in three planes, forming a knot of multi-cells, solitary, verrucose, sometimes branched on base, dark brown, thick-walled.

Culture characteristics: Conidia germinating on PDA within 14 h and germ tubes produced from all cells. Colonies growing on PDA, reaching 5 cm in 10 days at 30 °C, mycelium partly superficial, partly immersed, slightly effuse, radially striate, with irregular edge, dark brown to black; sexual or asexual spores not formed within 60 days.

Material examined: ITALY, Forlì-Cesena  Province, Montebello, Modigliana, on dead land cone of Cupressus glabra (Cupressaceae), 25 October 2013, E. Camporesi,IT-1490 (MFLU 14-0436, holotype; HKAS, isotype), extype living cultures MFLUCC 14-0417, KUMCC.

GenBank numbers: ITS: MF621583, LSU: MF621587, SSU: MF621592.

         Notes: Lophium zalerioides resembles L. arboricola in having monoblastic conidiogenous cells, dark hyphae and zalerion-like conidia (Buczacki 1972). However, conidia in Lophium zalerioides are multi-celled and twisted, which is different with L. arboricola. In the phylogenetic analysis, Lophium zalerioides forms a single clade and apart from L. arboricola (Hyde et al. 2017).