Synonyms: Circinostoma ambiens; Cryptodiaporthe populina; Cryptosphaeria corticis; Cryptosphaeria ligniota; Cryptosphaeria populina (heterotypic); Cryptosphaeria populina var. prunorum; Cryptosporella populina; Cucurbitaria populina (heterotypic); Cylindrotheca populina; Cytispora leucosperma; Cytospora ambiens; Cytospora ambiens f. betuligena; Cytospora germanica; Cytospora microstoma; Cytospora microstoma var. amelanchieris; Cytospora microstoma var. cotoneastri; Cytospora rhodophila; Diaporthe populina; Diatrype aneirina (heterotypic); Diatrype ligniota; Engizostoma ambiens; Engizostoma betulinum; Engizostoma diatrype; Engizostoma leucostomoides; Engizostoma ligniotum; Engizostoma microstomum; Engizostoma opalinum; Engizostoma pauperatum; Engizostoma populina; Engizostoma populinum; Engizostoma rhodophilum; Engizostoma subseriatum; Eutypa aneirina (heterotypic); Eutypa corticis; Eutypa populina; Euvalsa ambiens; Linospora populina; Naemaspora populina; Otthia populina; Sphaeria ambiens; Sphaeria aneirina (heterotypic); Sphaeria corticis (heterotypic); Sphaeria diatrypa (homotypic); Sphaeria ligniota; Sphaeria microstoma (heterotypic); Sphaeria populina (heterotypic); Sphaeria tetraspora (pro parte); Valsa ambiens (heterotypic); Valsa ambiens ambiens; Valsa ambiens dolosella; Valsa ambiens f. alnicola; Valsa ambiens f. elaeagni; Valsa ambiens f. octospora; Valsa ambiens f. populi; Valsa ambiens f. tiliae; Valsa ambiens f. ulmi; Valsa ambiens leucostomoides; Valsa ambiens var. betulae; Valsa ambiens var. carpini; Valsa ambiens var. coryli; Valsa ambiens var. crataegi; Valsa ambiens var. mali; Valsa ambiens var. populi; Valsa ambiens var. pyri; Valsa ambiens var. shepherdiae; Valsa aneirina; Valsa betulina; Valsa deplanata; Valsa diatrypa; Valsa diatrypa var. hippophaes; Valsa leucostomoides; Valsa microstoma (heterotypic); Valsa opulina; Valsa opulina var. lantanae; Valsa pauperata; Valsa populina; Valsa rhodophila (heterotypic); Valsa spinescens var. miscrostoma; Valsa subseriata; Valsella diatrypa (homotypic)