⚠ Version 1 of The Plant List has been superseded.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 Onagra biennis in version 1.1 of The Plant List.

Onagra biennis var. grandiflora (L'Hér.) Lindl. is a synonym of Oenothera biennis f. grandiflora (L'Hér.) D.S. Carp.

This name is a synonym of Oenothera biennis f. grandiflora (L'Hér.) D.S. Carp..

The record derives from Tropicos which reports it as a synonym (record 50129855) with original publication details: Edwards's Bot. Reg. 19: pl. 1604 pl. 1604 1833.