Synonyms: Atropis convoluta (homotypic); Atropis convoluta f. crassifolia; Atropis distans var. convoluta (homotypic); Atropis gussonei; Atropis palustris convoluta; Festuca convoluta (homotypic); Glyceria convoluta (homotypic); Glyceria distans var. convoluta; Glyceria festuciformis var. convoluta (homotypic); Glyceria gussonei; Poa convoluta (homotypic); Puccinellia bilykiana; Puccinellia distans convoluta; Puccinellia distans var. convoluta; Puccinellia festuciformis convoluta (homotypic); Puccinellia festuciformis gussonei; Puccinellia gussonei; Puccinellia palustris convoluta; Puccinellia syvaschica