Monochaetinula Muthumary, Abbas & B. Sutton, Trans. Br.

Perera, Rekhani H., Maharachchikumbura, Sajeewa S. N., Hyde, Kevin D., Bhat, D. Jayarama, Camporesi, Erio, Jones, E. B. Gareth, Senanayake, Indunil C., Al-Sadi, Abdullah M., Saichana, Natsaran, Liu, Jian-Kui & Liu, Zuo-Yi, 2018, An appendage-bearing coelomycete Pseudotruncatella arezzoensis gen. and sp. nov. (Amphisphaeriales genera incertae sedis) from Italy, with notes on Monochaetinula, Phytotaxa 338 (2), pp. 177-188 : 183

Monochaetinula Muthumary, Abbas & B. Sutton, Trans. Br. mycol. Soc. 87(1): 104 (1986)

≡ Neotruncatella Hyang B. Lee & T.T.T. Nguyen , in Hyde et al., Fungal Diversity 80: 198 (2016)

Monochaetinula terminaliae (Bat. & J.L. Bezerra) Muthumary, Abbas & B. Sutton [as ‘terminialiae’], Trans. Br. mycol. Soc. 87(1): 106 (1986)

≡ Neotruncatella endophytica Hyang B. Lee, P.M. Kirk, K.D. Hyde, Maharachch. & T.T.T. Nguyen , in Hyde et al., Fungal Diversity 80: 198 (2016)

≡ Monochaetia terminaliae Bat. & J.L. Bezerra, Publicações Inst. Micol. Recife 298: 13 (1960)

The endophytic genus Neotruncatella Hyang B. Lee & T.T.T. Nguyen was introduced based on N. endophytica Hyang B. Lee et al. ( Hyde et al. 2016). The genus is characterized by globose to subglobose conidiomata, ampulliform to subcylindrical, hyaline conidiogenous cells, and fusiform, mostly 3-septate, yellow to yellowish-brown conidia with apical and basal appendages ( Hyde et al. 2016). Based on ITS data, its phylogenetic position was confirmed as basal to Bartalinia Tassi , in Sporocadaceae , Amphisphaeriales ( Hyde et al. 2016) . However, the type species of Neotruncatella , N. endophytica is morphologically similar to Monochaetinula terminaliae ( Table 2). Muthumary et al. (1986) synonymised Monochaetia terminaliae Bat. & J.L. Bezerra under Monochaetinula terminaliae with new genus Monochaetinula . Later another 5 species were added to the genus based on phenotypic characters (Bianchinotti 1990, Nag Raj 1993, Matsushima 1996). Monochaetinula species are mainly endophytes: caulicolous, foliicolous, or corticolous, on various plants ( Muthumary et al. 1986, Bianchinotti 1990, Nag Raj 1993, Matsushima 1996). Members of Monochaetinula are unified by globose to subglobose conidiomata, fusiform and curved, holoblastic, usually 3 to 4(–7) septate conidia, with colorless to olivaceous brown or olivaceous median cells, and apical and basal appendages ( Muthumary et al. 1986, Bianchinotti 1990, Nag Raj 1993, Matsushima 1996). Species of Monochaetinula lack molecular data to confirm their phylogenetic placement. Hence, this genus was reffered to Amphisphaeriales , genera incertae sedis ( Senanayake et al. 2015, Wijayawardene et al. 2016). By considering phenotypic similarities and lifestyle, here we synonymize Neotruncatella endophytica under Monochaetinula terminaliae . Hence, the genus Neotruncatella becomes a synonym of Monochaetinula .