Synonyms: Aira brevifolia (heterotypic); Aira missurica; Airopsis brevifolia; Atropis canbyi; Atropis laevis; Atropis laevis var. rigida; Atropis tenuifolia (heterotypic); Atropis tenuifolia var. stenophylla; Festuca patagonica; Festuca spaniantha; Glyceria canbyi; Paneion buckleyanum; Paneion buckleyanum var. maius; Paneion sandbergii; Panicularia nuttalliana; Poa alcea; Poa andina (heterotypic); Poa buckleyana; Poa buckleyana var. elongata; Poa buckleyana var. sandbergii; Poa buckleyana var. stenophylla; Poa californica (homotypic); Poa canbyi; Poa candyi; Poa fallens; Poa fulvescens; Poa gracillima var. saxatilis; Poa helleri; Poa incurva; Poa laevigata; Poa laevis (heterotypic); Poa leckenbyi; Poa lucida; Poa nevadensis var. laevigata; Poa nevadensis var. leckenbyi; Poa sandbergii; Poa saxatilis; Poa secunda var. elongata; Poa secunda var. incurva; Poa secunda var. secunda; Poa secunda var. stenophylla; Poa stenantha var. sandbergii; Poa tenuifolia (heterotypic); Poa tenuifolia var. elongata; Poa tenuifolia var. rigida; Poa wyomingensis; Puccinellia canbyi; Puccinellia laevis; Sclerochloa californica