Distribution details in Bulgaria
EPPO Reporting Service (2013/151) /: Senecio inaequidens was found for the first time in 2009 in Bulgaria along railway tracks close to a railway station in Sofia. It is suspected that it was introduced via movement of international trains.
* Vladimirov V & Petrova A (2009) Senecio inaequidens (Asteraceae): a new alien species for the Bulgarian flora. Phytologia balcanica 15(3), 373-375.