###Instruction: Multi-class classification, answer with one of the labels:['no_consensus', 'delete', 'keep', 'comment', 'merge', 'redirect'] : ###Input:  Q15630491: Jacobaea vulgaris (Q15630491) : species of flowering plant in the daisy family Asteraceae : ( delete | history | links | entity usage | logs | discussion ) Needs to be merged with Q1144724. Q15630491 contains the newer synonym.
-- Rembert Andy ( talk ) 17:09, 5 December 2019 (UTC) Synonyms ARE NOT aliases, but valid taxon names. They have different authors and dates of publication. They have different type species. They DO NOT refer to the same taxon concept.They should never be merged, despite the vile messes that have been created in wikidata...  (There can also be an issue with marking them as instances of synonym rather than taxon, since (for plants), many authorities do not agree.) MargaretRDonald ( talk ) 19:30, 13 December 2019 (UTC)