Agrostis tenuis

Agrostis tenuis Sibthorp is a synonym (Soreng et al., 2000+) of:

Agrostis capillaris Linnaeus, an accepted species name sensu FNA Ed. Comm., 2007.

Agrostis tenuis Vasey nom. illeg. is a synonym (FNA Ed. Comm., 2007) of:

Agrostis idahoensis Nash, an accepted species name sensu FNA Ed. Comm., 2007.