Family ! Scientific Name Author Reference Date Poaceae * Poaceae Rchb. Consp. Regn. Veg. 54 1828 Poaceae !! Poaceae Barnhart Bull. Torrey Bot. Club 22: 7 1895 Poaceae * Poaceae Caruel Atti Reale Accad. Lincei Poaceae ** Poaeae Poales Small Fl. S.E. U.S. 48 1903 ! Poanae Takht. ex Reveal & Doweld Novon 9(4): 550 1999 Poaceae ** Poanae T.D. Macfarl. & L. Watson Taxon 31(2): 193–194 1982 Poaceae Poatae Hitchc. U.S.D.A. Bull. (1915‐23) 772: 6 1920 Poaceae Poa L. Sp. Pl. 1: 67 1753 Poaceae Poa sect. Abbreviatae Nannf. ex Tzvelev Novosti Sist. Vyssh. Rast. 11: 30 1974 Poaceae ** Poa sect. Abbreviatae Nannf. Symb. Bot. Upsal. 5: 25 Poaceae Poa sect. Acroleucae Prob. & Tzvelev Bot. Zhurn. [Moscow & Leningrad] 95(6): 864 2010 Poaceae ** Poa ser. Acroleucae Keng Claves Gen. Sp. Gram. Prim. Sinic. 169 1957 Poaceae Poa sect. Acutifoliae Pilg. ex Potztal Willdenowia 5(3): 473 1969 Poaceae Poa subg. Aeluropus (Trin.) Rchb. Deut. Bot. Herb.‐Buch 2: 39 1841 Poaceae ! Poa [ unranked ] Alpinae Hegetschw. ex Nyman Consp. Fl. Eur. 835 1882 Poaceae ** Poa sect. Alpinae (Hegetschw. ex Nyman) Soreng Novon 8(2): 193 1998 Poaceae ! Poa sect. Alpinae (Hegetschw. ex Nyman) Stapf Fl. Brit. India 7(22): 338 1897 [1896 Poaceae ! Poa ser. Alpinae Roshev. Fl. URSS 2: 411 1934 Poaceae Poa subg. Andinae Nicora Hickenia 1(18): 99 1977 Poaceae * Poa [ unranked ] Annuae Döll Fl. Baden 1: 172 1855 Poaceae ! Poa [ unranked ] Annuae Fr. ex Andersson Pl. Scand. Gram. 47 1852 Poaceae ** Poa sect. Annuae (Fr. ex Andersson) Lindm. Skand. Fl. 213 1926 Poaceae Poa ser. Annuae (Fr. ex Andersson) Roshev. Fl. URSS 2: 378 1934 Poaceae Poa sect. Anthochloa (Nees & Meyen) Soreng & L.J. Gillespie Aliso 23: 431 2007 Poaceae Poa subsect. Aphanelytrum (Hack.) Soreng & P.M. Peterson PhytoKeys 63: 110 2016 Poaceae ** Poa sect. Aphydris Keng Claves Gen. Sp. Gram. Prim. Sinic. 164 1957 Poaceae ! Poa sect. Aphydris (Griseb.) Tzvelev Novosti Sist. Vyssh. Rast. 11: 25 1974 Poaceae Poa ser. Arcticae Roshev. Fl. URSS 2: 410 1934 Poaceae Poa [ unranked ] Arctophila Rupr. Beitr. Pflanzenk. Russ. Reiches 2: 64 1846 Poaceae Poa sect. Arctopoa (Griseb.) Tzvelev Arktic. Fl. SSSR 2: 121 1964 Poaceae Poa subg. Arctopoa (Griseb.) Prob. Novosti Sist. Vyssh. Rast. 8: 34 1971 Poaceae Poa [ unranked ] Arenariae Hegetschw. Fl. Schweiz 87 1838 Poaceae ** Poa sect. Arenariae (Hegetschw.) Asch. & Graebn. Syn. Mitteleur. Fl. 2: 387 Poaceae Poa sect. Arenariae (Hegetschw.) Stapf Fl. Brit. India 7(22): 338 1897 [1896 Poaceae Poa sect. Atropis Trin. Mém. Acad. Imp. Sci. Saint‐Pétersbourg Poaceae Poa subsect. Australopoa Soreng Poaceae Poa sect. Austrofestuca (Tzvelev) Soreng & L.J. Gillespie Syst. Bot. 30(1): 97 2005 Poaceae Poa subsect. Austrofestuca (Tzvelev) Soreng Poaceae * Poa sect. Bolbophorum Asch. & Graebn. Syn. Mitteleur. Fl. 2: 391 1900 Poaceae Poa subsect. Bolbophorum (Asch. & Graebn.) Maire Fl. Afrique N. 3: 84 1955 Poaceae Poa subsect. Breviligulatae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa sect. Brizoides Pilg. ex Potztal Willdenowia 5(3): 472 1969 Poaceae Poa subsect. Brizoides (Pilg. ex Potztal) Soreng Poaceae Poa [ unranked ] Brizoma Nutt. Poaceae ** Poa sect. Bulbopoa F. Herm. Hercynia 1: 456 1939 Poaceae Poa ser. Bulbosae Roshev. Fl. URSS 2: 375 1934 Poaceae Poa subsect. Bulbosae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa [ unranked ] Caespitosae Fr. ex Lange Haandb. Danske Fl. 51 1851 Poaceae * Poa subsect. Caespitosae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae * Poa [ unranked ] Caespitosi Fr. ex Andersson Pl. Scand. Gram. 40 1852 Poaceae Poa [ unranked ] Catabrosodes K. Koch Linnaea 21(3): 406 1848 Poaceae ** Poa sect. Catapodium (Link) W.D.J. Koch Syn. Fl. Germ. Helv. (ed. 2) 925 1844 Poaceae ! Poa sect. Catapodium (Link) W.D.J. Koch Syn. Fl. Germ. Helv. 800 1837 Poaceae Poa sect. Cenisiae Asch. & Graebn. Syn. Mitteleur. Fl. 2: 404 1900 Poaceae Poa subsect. Cenisiae (Asch. & Graebn.) V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae * Poa sect. Coenopoa Hyl. Bot. Not. 1953(3): 354 1953 Poaceae Poa ser. Crassiculmae Roshev. Fl. URSS 2: 425 1934 Poaceae Poa sect. Dasypoa (Pilg.) Soreng Novon 8(2): 187 1998 Poaceae ! Poa sect. Dioicopoa E. Desv. Fl. Chil. 6: 413 1854 Poaceae Poa subg. Dioicopoa (E. Desv.) J.R. Edm. Bot. J. Linn. Soc. 76: 331 1978 Poaceae Poa [ unranked ] Dispar Döll Fl. Bras. 2(3): 119 Poaceae Poa sect. Dissanthelium (Trin.) Refulio Syst. Bot. 37(1): 129 2012 Poaceae Poa sect. Diversipoa Chrtek & V. Jirásek Preslia 34: 65 1962 Poaceae Poa sect. Dschungaricae (Roshev.) L. Liou Fl. Reipubl. Popularis Sin. 9(2): 210 2003 Poaceae Poa ser. Dshungaricae Roshev. Fl. URSS 2: 415 1934 Poaceae ** Poa [ unranked ] Epiles Hitchc. Man. Grasses U.S. 129 1935 Poaceae Poa subsect. Epiles Hitchc. ex Soreng Syst. Bot. 16(3): 512–513 1991 Poaceae Poa subg. Eragrostis (Wolf) Rchb. Deut. Bot. Herb.‐Buch 2: 39 1841 Poaceae ** Poa ser. Euglareosae Keng Claves Gen. Sp. Gram. Prim. Sinic. 169 1957 Poaceae ** Poa sect. Eupoa Hack. Nat. Pflanzenfam. 2(2): 73 1887 Poaceae ** Poa subg. Eupoa Stapf Fl. Brit. India 7: 338 1896 Poaceae * Poa [ unranked ] Fasciculiferae Fr. ex Andersson Pl. Scand. Gram. 38 1852 Poaceae Poa [ unranked ] Fasciculiferae Fr. ex Lange Haandb. Danske Fl. 74 1851 Poaceae Poa sect. Flaccidulae Hern.‐Cardona Diss. Bot. 46: 102 1978 Poaceae ** Poa [ unranked ] Genuinae Döll Fl. Bras. 2(3): 119 1878 Poaceae Poa [ unranked ] Glareosae Hegetschw. Fl. Schweiz 86 1838 Poaceae ** Poa sect. Glareosae (Hegetschw.) Asch. & Graebn. Syn. Mitteleur. Fl. 2: 387 1900 Poaceae ! Poa sect. Glareosae (Hegetschw.) Stapf Fl. Brit. India 7(22): 342 1897 [1896 Poaceae Poa sect. Glaucopoa Asch. & Graebn. Syn. Mitteleur. Fl. 2: 405 1900 Poaceae Poa subsect. Glaucopoa (Asch. & Graebn.) V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa subsect. Graniticae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae ** Poa subsect. Halophytae V.L. Marsh ex Soreng Syst. Bot. 16(3): 523 1991 Poaceae ! Poa subsect. Halophytae V.L. Marsh ex Soreng Phytologia 71(5): 410 1991 Poaceae Poa sect. Hemipoa Bubani 1902 Poaceae Poa sect. Homalopoa Dumort. Observ. Gramin. Belg. 110 Poaceae Poa supersect. Homalopoa (Dumort.) Soreng & L.J. Gillespie Aliso 23: 432 2007 Poaceae Poa [ unranked ] Hydrophilae Hegetschw. Fl. Schweiz 81 1838 Poaceae ** Poa sect. Hydrophilae (Hegetschw.) Asch. & Graebn. Syn. Mitteleur. Fl. 2: 387 1900 Poaceae Poa sect. Hydropoa Dumort. Observ. Gramin. Belg. 111 1824 Poaceae Poa sect. Hylopoa Asch. & Graebn. Syn. Mitteleur. Fl. 2: 406 1900 Poaceae Poa subsect. Hylopoa (Asch. & Graebn.) Maire Fl. Afrique N. 3: 91 1955 Poaceae Poa sect. Incanae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa sect. Ircuticae Prob. & Tzvelev Bot. Zhurn. [Moscow & Leningrad] 95(6): 865 2010 Poaceae Poa sect. Kolymenses Prob. Bot. Žhurn. (Moscow & Leningrad) 69(2): 258 1984 Poaceae ** Poa sect. Lanatiflorae Bor ex L. Liou Fl. Reipubl. Popularis Sin. 9(2): 164 2003 Poaceae Poa ser. Lanatiflorae Roshev. Fl. URSS 2: 409 1934 Poaceae Poa subsect. Laxae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa [ unranked ] Leptoneurae Döll Fl. Baden 1: 172 1855 Poaceae * Poa sect. Leptoneurae (Döll) Maire Fl. Afrique N. 3: 78 1955 Poaceae Poa sect. Leptophyllae J.R. Edm. Bot. J. Linn. Soc. 76(4): 332 1978 Poaceae ** Poa sect. Leptopoa F. Herm. Hercynia 1(3): 457 Poaceae Poa subsect. Longiligulatae V. Jirásek V?stn. Král. Ceské Spole?n. Nauk Poaceae Poa [ unranked ] Macranthela K. Koch Linnaea 21(3): 404 1848 Poaceae Poa sect. Macropoa F. Herm. ex Tzvelev Novosti Sist. Vyssh. Rast. 9: 49 1972 Poaceae Poa sect. Madropoa Soreng Syst. Bot. 16(3): 512 1991 Poaceae ** Poa subsect. Madropoa Soreng Syst. Bot. 16(3): 513 1991 Poaceae ! Poa subsect. Madropoa Soreng Phytologia 71(5): 410 1991 Poaceae Poa sect. Malacanthae (Roshev.) Olonova Turczaninowia 1(4): 7 1998 Poaceae Poa ser. Malacanthae Roshev. Fl. URSS 2: 422 1934 Poaceae Poa subsect. Malacanthae (Roshev.) Prob. Novosti Sist. Vyssh. Rast. 8: 38 1971 Poaceae Poa sect. Megastachya Dumort. Observ. Gramin. Belg. 110 Poaceae Poa [ unranked ] Micranthela K. Koch Linnaea 21(3): 402 1848 Poaceae ! Poa sect. Micrantherae Stapf Fl. Brit. India 7(22): 343 1897 [1896 Poaceae Poa sect. Monandropoa Parodi Revista Argent. Agron. 29(1–2): 17 1962 [1963 Poaceae Poa sect. Nanopoa J.R. Edm. Bot. J. Linn. Soc. 76(4): 333 1978 Poaceae Poa [ unranked ] Nemorales Hegetschw. Fl. Schweiz 83 1838 Poaceae * Poa sect. Nemorales Stapf Fl. Brit. India 7(22): 340 1897 [1896 Poaceae ** Poa sect. Nemorales (Hegetschw.) Asch. & Graebn. Syn. Mitteleur. Fl. 2: 387 1900 Poaceae ** Poa ser. Nemorales (Hegetschw.) Keng Claves Gen. Sp. Gram. Prim. Sinic. 165 1957 Poaceae ** Poa subsect. Nemorales H.N. Pojark. 10 1965 Poaceae * Poa sect. Nervosae Rouy Fl. France 14: 278 1913 Poaceae Poa [ unranked ] Neurantha K. Koch Linnaea 21(3): 405 1848 Poaceae Poa subsect. Neuropoa (Clayton) Soreng Poaceae ** Poa [ unranked ] Nevadenses Hitchc. Man. Grasses U.S. 135 1935 Family ! Scientific Name Author Reference Date Poaceae Poa sect. Nivicolae (Roshev.) Prob. Novosti Sist. Vyssh. Rast. 8: 48 1971 Poaceae Poa ser. Nivicolae Roshev. Fl. URSS 2: 379 1934 Poaceae Poa subsect. Nivicolae (Roshev.) Tzvelev Novosti Sist. Vyssh. Rast. 11: 27 1974 Poaceae * Poa sect. Obsoletae Rouy Fl. France 14: 267 1913 Poaceae * Poa sect. Ochlopoa Asch. & Graebn. Syn. Mitteleur. Fl. 2: 387 1900 Poaceae Poa subg. Ochlopoa (Asch. & Graebn.) Hyl. Bot. Not. 1953(3): 354 1953 Poaceae Poa subsect. Ochlopoa (Asch. & Graebn.) Maire Fl. Afrique N. 3: 78 1955 Poaceae ** Poa subsect. Ochlopoa (Asch. & Graebn.) Chrtek & V. Jirásek Preslia 34: 65 1962 Poaceae Poa sect. Oreinos Asch. & Graebn. Syn. Mitteleur. Fl. 2: 400 1900 Poaceae ** Poa ser. Orinosae Keng Claves Gen. Sp. Gram. Prim. Sinic. 167 1957 Poaceae Poa [ unranked ] Pachyneurae Asch. Fl. Brandenburg 1: 847 1864 Poaceae * Poa sect.