Calamagrostis crassiglumis
Thurb
Calamagrostis expansa
Rickett & Gilly
Calamagrostis inexpansa
A Gray
Calamagrostis labradorica
Kearney
Calamagrostis hyperborea
Lange
Calamagrostis californica
Kearney
Calamagrostis chordorrhiza
AE Porsild
Calamagrostis lacustris
Kearney Nash
Calamagrostis canadensis var. arcta
Stebbins
Calamagrostis canadensis var. acuminata
Vasey ex Shear & Rydb
Calamagrostis hyperborea var. americana
Vasey Kearney
Calamagrostis hyperborea var. elongata
Kearney
Calamagrostis hyperborea var. stenodes
Kearney
Calamagrostis inexpansa var. barbulata
Kearney
Calamagrostis inexpansa var. brevior
Vasey Stebbins
Calamagrostis inexpansa var. novae-angliae
Stebbins
Calamagrostis inexpansa var. robusta
Vasey Stebbins
Calamagrostis lapponica var. brevipilis
Stebbins
Calamagrostis pickeringii var. lacustris
Kearney Hitchc
Calamagrostis stricta var. brevior
Vasey
Calamagrostis stricta var. lacustris
Kearney CW Greene
Calamagrostis aculeolata
Hack Ohwi
Calamagrostis americana
Vasey Scribn
Calamagrostis elongata
Kearney Rydb
Calamagrostis robusta
Vasey Vasey
Calamagrostis wyomingensis
Gand
Deyeuxia americana
Vasey Lunell
Deyeuxia crassiglumis
Thurb Vasey
Deyeuxia elongata
Kearney Lunell
Deyeuxia glomerata
Vasey ex Macoun
Deyeuxia hyperborea
Lange Lunell
Calamagrostis neglecta ssp. inexpansa
A Gray Tzvelev
Calamagrostis breviseta var. lacustris
Kearney
Calamagrostis hyperborea var. hyperborea
Lange
Calamagrostis inexpansa var. inexpansa
A Gray
Calamagrostis langsdorfii var. acuminata
Vasey ex Shear & Rydb Litw
Calamagrostis neglecta var. crassiglumis
Thurb Beal
Calamagrostis neglecta var. hyperborea
Lange ME Jones
Calamagrostis neglecta var. inexpansa
A Gray ME Jones
Calamagrostis stricta var. aculeolata
Hack
Calamagrostis stricta var. robusta
Vasey
Deyeuxia hyperborea var. elongata
Kearney Lunell
Deyeuxia hyperborea var. stenodes
Kearney Lunell
Deyeuxia neglecta var. americana
Vasey
Deyeuxia neglecta var. robusta
Vasey