Children (8 direct children, 8 direct and indirect children):
Agrostis hyemalis subsp. geminata
Agrostis hyemalis var. laxiflora
Agrostis hyemalis var. scabra
Agrostis hyemalis var. oreophila
Agrostis hyemalis var. keweenawensis
Agrostis hyemalis var. elata
Agrostis hyemalis var. subrepens
Agrostis hyemalis var. tenuis