⚠ Version 1 of The Plant List has been superseded.
This name record (from TICA) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Hieracium laevicaule in version 1.1 of The Plant List.
This name is a synonym of Hieracium laevigatum subsp. leucothyrsum .
The record derives from TICA which reports it as a synonym (record 44D00A94-7373-4E15-A904-B456E8A1D355
) with original publication details: "Zahn, in Engler, Pflanzenr. 77. 1921." 859 1921.