MycoBank number:MB 551259;Index Fungorum number:IF 551259;Facesoffungi number: FoF 00833; 2 morphological species (Index Fungorum 2020), 2 species with molecular data.

Type species –Asymmetrispora tennesseensis(Mugambi, A.N. Mill. & Huhndorf) Thambugala & K.D. Hyde, Fungal Divers. 74: 248 (2015).

≡Misturatosphaeria tennesseensisMugambi, A.N. Mill. & Huhndorf, in Mugambi & Huhndorf, Stud. Mycol. 64: 114 (2009).

Notes –Asymmetrisporawas introduced by Thambugala et al. (2015b) to accommodateA. tennesseensis(type species) andA. mariaebased on asymmetrical ascospores. These species were previously known asMisturatosphaeria tennesseensisandM. mariae,respectively.Asymmetrisporaspecies differ fromMisturatosphaeriain having semi-immersed to erumpent, globose to pyriform ascomata, without a subiculum, and pale to dark brown, fusiform to broadly clavate, muriform, smooth-walled, ascospores lacking a mucilaginous sheath (Mugambi & Huhndorf 2009a, Zhang et al. 2013b). Jaklitsch et al. (2016b) illustrated a broad description onFloricolaceaeand synonymizedAsymmetrisporaspecies underTeichosporaand consideredT. trabicolaas type species.A. tennesseensisandT. trabicola(type species ofTeichospora), show distinct morphological differences, such asA. tennesseensishas fusiform, 3-septate ascospores, hyaline when young, pale brown to dark brown at mature with constricted middle septum, whereasT.trabicolahas brown and muriform, ellipsoid to clavate ascospores (Jaklitsch et al. 2016b). According to the muti-gene phylogeny herein,Asymmetrisporaspecies are nested more distantly fromTeichosporaspecies (Fig. 152). Therefore, based on morphological and phylogenetic ambiguities ofAsymmetrisporaspecies withTeichosporaspecies, we considerAsymmetrisporaas an individual genus inTeichosporaceae.

Figure 152– Phylogram generated from maximum likelihood analysis (RAxML) of genera inTeichosporaceaebased on ITS, LSU, and tef1 sequence data. Maximum likelihood bootstrap values equal or above 70 %, Bayesian posterior probabilities equal or above 0.90 (MLBS/PP) are given at the nodes. An original isolate number is noted after the species name. The tree is rooted toHermatomyces tectonae(MFLUCC 14-1140) andH. thailandica(MFLUCC 14-1143).The ex-type strains are indicated in bold. Hyphen (-) represents support values below 70 % MLBS and 0.90 PP.

Species