Macrosiphum sileneum Theobald 1913 = Macrosiphum stellariae Theobald 1913

Theobald described Macrosiphum sileneum from Silene in the same paper as M. stellariae from Stellaria, the latter having page priority. Synonymy has long been suspected (Börner, 1952; Heie, 1994). Material under both names in the Theobald collection, and samples subsequently collected from both plant genera, showed no consistent differences and clustered together in a multivariate analysis by Watson (1982) ..