⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-342242, with some changes.

Ballota nigra var. ruderalis (Sw.) Rchb.f. is a synonym of Ballota nigra subsp. ruderalis (Sw.) Briq.

This name is a synonym of Ballota nigra subsp. ruderalis (Sw.) Briq..

The record derives from WCSP which reports it as a synonym (record 342242) with original publication details: Icon. Fl. Germ. Helv. 18: 10 1858.