⚠ Version 1 of The Plant List has been superseded.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 Calamagrostis orbignyana in version 1.1 of The Plant List.
This name is a synonym of Calamagrostis orbignyana .
The record derives from Tropicos which reports it as a synonym (record 25529658
) with original publication details: Contr. U.S. Natl. Herb. 24(8): 378 378 1927.