Longiostiolum Doilom, Ariyaw. & K.D. Hyde, in Li et al., Fungal Diversity 78: 59 (2016).
MycoBank number: MB 551899; Index Fungorum number: IF 551899; Facesoffungi number: FoF 01881; 1 morphological species (Species Fungorum 2020), 1 species with molecular data.
Type species – Longiostiolum tectonae Doilom, Bhat & K.D. Hyde, in Li et al., Fungal Diversity 78: 55 (2016).
Notes – Longiostiolum is found associated with a collection of dried bark of teak from northern Thailand. The genus has remarkable characters of having long ostioles with multi-septate hyaline ascospores. The genus clearly differs from the other genera in suborder Massarineae in having fusiform, multi-septate, hyaline ascospores (morphology see Li et al. 2016a, Wijayawardene et al. 2018, outline).