Kirschsteiniothelia D. Hawksw., J. Linn. Soc., Bot. 91: 182 (1985).

Index Fungorum number: IF 25723; Facesoffungi number: FoF 08040; 24 morphological species (Bao et al. 2018; Species Fungorum 2020), 11 species with molecular data.

Type species: Kirschsteiniothelia aethiops (Sacc.) D. Hawksw., Bot. J. Linn. Soc. 91(1–2): 185 (1985).

Notes: Kirschsteiniothelia has little DNA sequence data for Kirschsteiniothelia species available in GenBank, thus, more collections and sequence data are needed (Fig. 39).

Fig. 39 The sexual morph characters of Kirschsteiniothelia spp. a, b Appearance of ascomata on host surface. c, d Section through ascoma. e, f Peridium. i, j Immature asci. k, l Asci. m–s Ascospores. Note: a, c, e, g, i, k, m–p = Kirschsteiniothelia lignicola (holotype); b, d, f, h, j, l, q–s = Kirschsteiniothelia emarceis (holotype)