Alpine Timothy, Mountain Timothy: Phleum alpinum (Synonyms: Phleum alpinum var. commutatum, Phleum commutatum, Phleum commutatum var. americanum)
Cultivated Timothy, Timothy: Phleum pratense (Synonyms: Phleum nodosum, Phleum pratense ssp. nodosum, Phleum pratense var. nodosum)