⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-4101451, with some changes.

Smelowskia calycina var. americana (Regel & Herder) W.H. Drury & Rollins is a synonym of Smelowskia americana Rydb.

This name is a synonym of Smelowskia americana Rydb..

The record derives from Tropicos which reports it as a synonym (record 4101451) with original publication details: Rhodora 54(640): 99 99 1952.