Synonyms: Amphione cymosa; Convolvulus bifidus (heterotypic); Convolvulus blandus; Convolvulus caliginosus (homotypic); Convolvulus cymosus (heterotypic); Convolvulus lotnoha (homotypic); Convolvulus pentagonus; Convolvulus rothii; Convolvulus umbellatus (heterotypic); Ipomoea bifida (heterotypic); Ipomoea blanda; Ipomoea cymosa (heterotypic); Ipomoea cymosa macra (heterotypic); Ipomoea heynei (heterotypic); Ipomoea pentagona; Ipomoea rothii; Merremia umbellata macra; Merremia umbellata orientalis; Merremia umbellata var. orientalis