Errors in Senecioneae classification are reviewed with mention of reasons for the errors. Gongrothamnus (Distephanus, Vernonieae), Liabum (Liabeae), Eremothamnus (Eremothamneae, near Arctoteae) - all Cichoriodeae, Schistocarpha and Neurolaena (paleaceous Heliantheae) and Arnica (Helenieae-Heliantheae), all with yellow flowers and capillary pappus, remained in the Senecioneae until the 1970's and 1980's as a relict of the overly broad Senecionideae of Lessing (1832) and Candolle (1836-7). At the same time the Blennospermatinae were usually excluded. Weber (1973) wrongly tranferred western United States species of Senecio to the asiatic genus Ligularia because of the smell of the specimens in herbarium cases. The name Cacalia was broadened and then misattributted by Linnaeus (1753) and Cassini (1816) for taxonomic convenience. Cacalia was defined by lack of rays and lack of yellow flowers, which excluded most of the closest relatives of the concept such as Ligularia but included the remote group Mulgediifolii. The term Cacalioid continued to be used for the previous group now known as the Tussilagineae. True Cacalia is European, with 4-lobed corollas, and is now properly placed in the subtribe Adenostylinae. Packera has been separated from Senecio because of differences in chromosome number. The reliance on chromosome study and TEM sections of pollen to justify the genus is questioned.

Key words: Arnica, Cacalia, Ligularia, Mistakes, Packera, Senecioneae