Poa alpigena subsp. colpodea Poa alpigena var. colpodea Poa arctica subsp. stricta Poa arctica var. stricta Poa laxa subsp. stricta Poa pratensis subsp. colpodea Poa pratensis var. colpodea Poa rigens subsp. colpodea Poa stricta Poa stricta subsp. colpodea Poa tolmatchewii var. stricta Poa arctica var. stricta
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024