Antidactylaria Z.F. Yu, M. Qiao & R.F. Castaneda, 2021

Qiao, Min, Zheng, Hua, Guo, Ji-Shu, Castaneda-Ruiz, Rafael F., Xu, Jian-Ping, Peng, Jie, Zhang, Ke-Qin & Yu, Ze-Fen, 2021, Two new asexual genera and six new asexual species in the family Microthyriaceae (Dothideomycetes, Ascomycota) from China, MycoKeys 85, pp. 1-30 : 1

Antidactylaria Z.F. Yu, M. Qiao & R.F. Castaneda gen. nov.

Etymology.

Greek, Anti, meaning against, Latin, dactylaria, referring to the genus Dactylaria .

Description.

Asexual morph hyphomycetous. Mycelium superficial and immersed. Conidiophores macronematous, erect, unbranched, septate, hyaline, sometimes reduced to conidiogenous cells. Conidiogenous cells denticulate, polyblastic, sympodial elongated, integrated, terminal determinate or indeterminate, hyaline. Conidial secession rhexolytic. Conidia solitary, acrogenous, narrow obclavate, cylindrical to fusiform, navicular, attenuate towards the apex, rostrate, unicellular or septate, hyaline or subhyaline, smooth-walled, with a minute basal frill. Sexual state: unknown.

Type species.

Antidactylaria minifimbriata Z.F. Yu, M. Qiao & R.F. Castañeda.

Notes.

Antidactylaria is superficially similar to the genus Dactylaria Sacc. in morphology. The genus Dactylaria , typified with D. purpurella (Sacc.) Sacc., is characterised by unbranched, septate, hyaline or pigmented conidiophores, denticulate, integrated, mostly terminal, sympodially extending conidiogenous cells and cylindrical, fusiform, filiform, ellipsoid, clavate, obclavate, unicellular or septate, hyaline or pale pigmented conidia that are liberated with schizolytic secession ( Goh and Hyde 1997; Paulus et al. 2003; Seifert et al. 2011). However, the rhexolytic conidial secession, observed in Antidactylaria , is absent in Dactylaria . Paulus et al. (2003) discussed the conidiogenous event as an important criterion for generic delimitation. In addition, phylogeny analysis showed that Antidactylaria species belong to Microthyriales , while Dactylaria species belong to Helotiales .