⚠ Version 1 of The Plant List has been superseded.

This name record (from Tropicos) 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 Smyrnium atropurpureum in version 1.1 of The Plant List.

Smyrnium atropurpureum Lam. is a synonym of Thaspium aureum var. atropurpureum (Nutt.) J.M. Coult. & Rose

This name is a synonym of Thaspium aureum var. atropurpureum (Nutt.) J.M. Coult. & Rose.

The record derives from Tropicos which reports it as a synonym (record 50326375) with original publication details: Encycl. 3: 667 667 1792.