Shorthair Reedgrass: Calamagrostis breweri
Bluejoint, Bluejoint Reedgrass: Calamagrostis canadensis var. canadensis (Synonyms: Calamagrostis anomala, Calamagrostis atropupurea, Calamagrostis canadensis var. acuminata, Calamagrostis canadensis var. imberbis, Calamagrostis canadensis var. pallida, Calamagrostis canadensis var. robusta, Calamagrostis canadensis var. typica, Calamagrostis expansa var. robusta, Calamagrostis hyperborea, Calamagrostis inexpansa var. cuprea, Calamagrostis inexpansa var. robusta, Calamagrostis scribneri)
Bluejoint, Western Bluejoint: Calamagrostis canadensis var. langsdorfii (Synonyms: Calamagrostis canadensis ssp. langsdorffii, Calamagrostis canadensis var. lactea, Calamagrostis canadensis var. macouniana, Calamagrostis canadensis var. scabra, Calamagrostis lactea, Calamagrostis xlactea, Calamagrostis langsdorfii, Calamagrostis langsdorfii var. lactea, Calamagrostis macouniana, Calamagrostis nubila)
Purple Reedgrass: Calamagrostis purpurascens (Synonyms: Calamagrostis lepageana, Calamagrostis maltei, Calamagrostis purpurascens ssp. maltei, Calamagrostis purpurascens var. maltei, Calamagrostis purpurascens var. purpurascens, Calamagrostis yukonensis, Deschampsia congestiformis)
Pinegrass, Pine Reedgrass: Calamagrostis rubescens (Synonym: Calamagrostis fasciulata)
Narrow-spiked Reedgrass, Northern Reedgrass, Northern Reed Grass: Calamagrostis stricta ssp. inexpansa (Synonyms: Calamagrostis californica, Calamagrostis canadensis var. acuminata, Calamagrostis canadensis var. arcta, Calamagrostis chordorrhiza, Calamagrostis crassiglumis, Calamagrostis expansa, Calamagrostis fernaldii, Calamagrostis hyperborea, Calamagrostis hyperborea var. americana, Calamagrostis hyperborea var. elongata, Calamagrostis hyperborea var. stenodes, Calamagrostis inexpansa, Calamagrostis inexpansa var. barbulata, Calamagrostis inexpansa var. brevior, Calamagrostis inexpansa var. cuprea, Calamagrostis inexpansa var. inexpansa, Calamagrostis inexpansa var. novae-angliae, Calamagrostis inexpansa var. robusta, Calamagrostis labradorica, Calamagrostis lacustris, Calamagrostis lapponica var. brevipilis, Calamagrostis pickeringii var. lacustris, Calamagrostis robertii, Calamagrostis stricta var. brevior, Calamagrostis stricta var. lacustris)
Slimstem Reedgrass: Calamagrostis stricta ssp. stricta (Synonyms: Calamagrostis neglecta, Calamagrostis neglecta ssp. stricta, Calamagrostis neglecta var. gracilis, Calamagrostis neglecta var. micrantha, Calamagrostis neglecta var. neglecta, Calamagrostis stricta ssp. stricta var. stricta, Calamagrostis stricta var. stricta)
Cascade Reedgrass: Tweedy's Reedgrass: Calamagrostis tweedyi