⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-2736304, with some changes.

Carduus theodori var. serrulatus R.E. Fr. is a synonym of Carduus schimperi subsp. schimperi Sch.Bip.

The record derives from Tropicos which reports it as a synonym (record 2736304) with original publication details: Acta Horti Berg. 8: 18 18 1923.