Children (5 direct children, 5 direct and indirect children):
Calamagrostis canadensis var. canadensis
Calamagrostis canadensis var. langsdorffii
Calamagrostis canadensis langsdorffii
Calamagrostis canadensis var. langsdorfii
Calamagrostis canadensis var. macouniana
Calamagrostis canadensis var. scabra