[Muhlenbergia sylvatica f. sylvatica (Torr.) Torr. ex A. Gray, moreMuhlenbergia sylvatica var. gracilis Scribn., Muhlenbergia sylvatica var. robusta Fernald, Muhlenbergia sylvatica var. sylvatica (Torr.) Torr. ex A. Gray, Muhlenbergia umbrosa Scribn.]