| Poaceae | |
Calamagrostis abnormis
| (Hook. f.) U. Shukla | Grasses of North-East India 45 | 1996 |
| Poaceae | |
Calamagrostis accedens
| (Vickery) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis aculeolata
| (Hack.) Ohwi | Acta Phytotax. Geobot. 2: 278 | 1933 |
| Poaceae | |
Calamagrostis acuminata
| (Vickery) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis acutiflora
| (Schrad.) DC. | Fl. Franç. (ed. 3) 5: 255 | 1815 |
| Poaceae | |
Calamagrostis × acutiflora
| (Schrad.) DC. | Fl. Franç. (ed. 3) 5: 255 | 1815 |
| Poaceae | |
Calamagrostis adpressi-ramea
| Ohwi | Bot. Mag. (Tokyo) 45: 193, 389 | 1931 |
| Poaceae | |
Calamagrostis adylssuensis
| Seredin | | |
| Poaceae | |
Calamagrostis aemula
| (R. Br.) Steud. | Nomencl. Bot. (ed. 2) 1: 249 | 1840 |
| Poaceae | |
Calamagrostis aequata
| (Nees) J.M. Black | Fl. S. Austral. 1: 70 | 1922 |
| Poaceae | |
Calamagrostis aequivalvis
| (Trin.) Steffen | Beih. Bot. Centralbl., Abt. 2 58b: 162 | 1938 |
| Poaceae | |
Calamagrostis affinis
| (M. Gray) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | ** |
Calamagrostis agapatea
| Steud. ex Lechl. | Berberid. Amer. Austr. 56 | 1857 |
| Poaceae | |
Calamagrostis agrostidiformis
| Roshev. | | |
| Poaceae | * |
Calamagrostis agrostiflora
| Beck | Fl. Nieder-Österreich 1: 61 | 1891 |
| Poaceae | |
Calamagrostis agrostioides
| Matuszk. | Ann. Univ. Mariae Curie-Skłodowska, Sect. C, Biol. 3: 257 | 1948 |
| Poaceae | |
Calamagrostis agrostoides
| (Pursh) Pursh ex Spreng. | Syst. Veg. [Sprengel] 1: 252 | 1825 [1824] |
| Poaceae | * |
Calamagrostis agrostoides
| Boiss. | Fl. Orient. [Boiss.] 5: 522 | 1884 |
| Poaceae | |
Calamagrostis airoides
| (Poir.) Steud. | Nomencl. Bot. (ed. 2) 1: 249 | 1840 |
| Poaceae | |
Calamagrostis ajanensis
| Kharkev. & Prob. | Bot. Zhurn. (Kiev) 68(10): 1409 | 1983 |
| Poaceae | |
Calamagrostis alajica
| Litv. | Bot. Mater. Gerb. Glavn. Bot. Sada R.S.F.S.R. 2: 122 | 1921 |
| Poaceae | |
Calamagrostis alaskana
| Kearney | Bull. Div. Agrostol., U.S.D.A. 11: 32 | 1898 |
| Poaceae | |
Calamagrostis alba
| (J. Presl) Steud. | Nomencl. Bot. (ed. 2) 1: 249 | 1840 |
| Poaceae | ** |
Calamagrostis albescens
| Buckley ex A. Gray | Proc. Acad. Nat. Sci. Philadelphia 14: 334 | 1862 |
| Poaceae | |
Calamagrostis albicans
| Buckley | Proc. Acad. Nat. Sci. Philadelphia 14: 92 | 1862 |
| Poaceae | |
Calamagrostis aleutica
| Trin. | Veg. Ins. Sitcha 2(2): 171 | 1832 |
| Poaceae | |
Calamagrostis alexeenkoana
| Litv. ex Rosh. | Fl. SSSR 2: 212, 749 | 1934 |
| Poaceae | |
Calamagrostis alopecuroides
| Roshev. | | |
| Poaceae | |
Calamagrostis alpicola
| Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis alpina
| Host | | |
| Poaceae | |
Calamagrostis altaica
| Tzvelev | Rast. Tsentr. Azii 4: 82 | 1968 |
| Poaceae | |
Calamagrostis altissima
| Host | Fl. Austriac. 1: 101 | 1827 |
| Poaceae | ** |
Calamagrostis ameghinoi
| (Speg.) Hauman | Anales Mus. Nac. Hist. Nat. Buenos Aires 29: 57 | 1917 |
| Poaceae | ! |
Calamagrostis ameghinoi
| (Speg.) Macloskie | Rep. Princeton Univ. Exp. Patagonia, Bot. 8(1,5,1): 193–194 | 1904 |
| Poaceae | |
Calamagrostis americana
| (Vasey) Scribn. | Bull. Div. Agrostol., U.S.D.A. 5: 27 | 1897 |
| Poaceae | |
Calamagrostis × amgunensis
| Prob. | Novosti Sist. Vyssh. Rast. 48: 20 | 2017 |
| Poaceae | |
Calamagrostis amoena
| (Pilg.) Pilg. | Bot. Jahrb. Syst. 42: 60 | 1908 |
| Poaceae | |
Calamagrostis ampliflora
| Tovar | Mem. Mus. Hist. Nat. "Javier Prado" 11: 16 | 1960 |
| Poaceae | |
Calamagrostis amurensis
| Prob. | Bot. Zhurn. (Kiev) 68(1): 1410 | 1983 |
| Poaceae | |
Calamagrostis andina
| Nutt. | J. Acad. Nat. Sci. Philadelphia, ser. 2 1: 187 | 1848 |
| Poaceae | |
Calamagrostis × andrejewii
| Litv. | | |
| Poaceae | |
Calamagrostis angusta
| (Vasey) Kearney | Bull. Div. Agrostol., U.S.D.A. 11: 21–22 | 1898 |
| Poaceae | * |
Calamagrostis angustifolia
| Kom. | Bot. Mater. Gerb. Glavn. Bot. Sada SSSR 6(1): 1–2 | 1926 |
| Poaceae | ! |
Calamagrostis angustifolia
| Kom. | Bot. Mater. Gerb. Glavn. Bot. Sada SSSR 6: 192 | 1926 |
| Poaceae | |
Calamagrostis aniselytron
| Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | ! |
Calamagrostis anomala
| Suksd. | Allg. Bot. Z. Syst. 12(3): 43 | 1906 |
| Poaceae | ** |
Calamagrostis anomala
| Steud. ex Lechl. | Berberid. Amer. Austr. 56 | 1857 |
| Poaceae | |
Calamagrostis anthoxanthoides
| (Munro ex Hook. f.) Regel | Trudy Imp. S.-Peterburgsk. Bot. Sada 7: 639 | 1881 |
| Poaceae | ** |
Calamagrostis antoniana
| (Griseb.) D.M. Moore | Fl. Tierra del Fuego 310 | 1983 |
| Poaceae | ** |
Calamagrostis antoniana
| (Griseb.) Steud. ex Hitchc. | Contr. U.S. Natl. Herb. 24(8): 378 | 1927 |
| Poaceae | ** |
Calamagrostis antoniana
| Steud. ex Lechl. | Berberid. Amer. Austr. 56 | 1857 |
| Poaceae | ! |
Calamagrostis antoniana
| (Griseb.) Hack. ex Dusén | Rep. Princeton Univ. Exp. Patagonia, Bot., Suppl. 8: 42 | 1915 |
| Poaceae | |
Calamagrostis appressa
| (Vickery) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis araeantha
| (Pilg.) Pilg. | Bot. Jahrb. Syst. 42: 60 | 1908 |
| Poaceae | |
Calamagrostis archboldii
| Hitchc. | Brittonia 2(2): 115 | 1936 |
| Poaceae | |
Calamagrostis arctica
| Vasey | U.S.D.A. Div. Bot. Bull. 13(2): t. 55 | 1893 |
| Poaceae | |
Calamagrostis areantha
| (Pilg.) Pilg. | Bot. Jahrb. Syst. 42: 60 | 1908 |
| Poaceae | |
Calamagrostis arenaria
| (L.) Roth | Tent. Fl. Germ. 1: 34 | 1788 |
| Poaceae | |
Calamagrostis arenicola
| Fernald | Rhodora 30(358): 203 | 1928 |
| Poaceae | |
Calamagrostis arisanensis
| Honda | Bot. Mag. (Tokyo) 40: 440 | 1926 |
| Poaceae | |
Calamagrostis × aristata
| Ohwi | Bot. Mag. (Tokyo) 45: 194 | 1931 |
| Poaceae | |
Calamagrostis armata
| (Döll) Parodi | Revista Argent. Agron. 16(2): 68, 69 | 1949 |
| Poaceae | |
Calamagrostis arundinacea
| (L.) Roth | Tent. Fl. Germ. 2(1): 89 | 1789 |
| Poaceae | |
Calamagrostis arundo
| Ehrh. ex Roth | Tent. Fl. Germ. 1: 33 | 1788 |
| Poaceae | |
Calamagrostis atjehensis
| Ohwi | Bull. Tokyo Sci. Mus. 18: 13 | 1947 |
| Poaceae | |
Calamagrostis atropurpurea
| Nash | Bull. New York Bot. Gard. 2(6): 153–154 | 1901 |
| Poaceae | |
Calamagrostis aurea
| (Munro ex Wedd.) Hack. ex Sodiro | Anales Univ. Centr. Ecuador 3(25): 481 | 1889 |
| Poaceae | |
Calamagrostis australis
| (Zoll. & Moritz) Buse | Pl. Jungh. 343 | 1854 |
| Poaceae | |
Calamagrostis austrodensa
| Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis austrojeholensis
| Honda | Rep. First Sci. Exped. Manchoukuo 4(2): 8, f. 2 | 1935 |
| Poaceae | |
Calamagrostis austroscaberula
| Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis autumnalis
| Koidz. | Bot. Mag. (Tokyo) 39: 18 | 1925 |
| Poaceae | ! |
Calamagrostis avenacea
| (J.F. Gmel.) W.R.B. Oliv. | Trans. & Proc. New Zealand Inst. 99: 127 | 1917 |
| Poaceae | * |
Calamagrostis avenacea
| (J.F. Gmel.) Bech. | Candollea 7: 519 | 1938 |
| Poaceae | |
Calamagrostis avenoides
| (Hook. f.) Cockayne | New Zealand Dep. Lands Rep. Bot Surv. Tongariro Natl. Park 35 | 1908 |
| Poaceae | |
Calamagrostis × badzhalensis
| Prob. | Bot. Zhurn. (Kiev) 68(10): 1411 | 1983 |
| Poaceae | |
Calamagrostis baicalensis
| (Litv.) Steph. ex Komarov | Fl. SSSR 2: 221 | 1934 |
| Poaceae | |
Calamagrostis baicalensis
| Litv. | Trudy Bot. Muz. Imp. Akad. Nauk 8: 63 | 1911 |
| Poaceae | |
Calamagrostis balansae
| Boiss. | Fl. Orient. [Boiss.] 5: 522 | 1884 |
| Poaceae | |
Calamagrostis balkharica
| P.A. Smirn. | Bull. Soc. Imp. Naturalistes Moscou 49(1): 91 | 1940 |
| Poaceae | |
Calamagrostis baltica
| Trin. | Gram. Unifl. Sesquifl. 227 | 1824 |
| Poaceae | |
Calamagrostis barbata
| V.N. Vassil. | Feddes Repert. Spec. Nov. Regni Veg. 68: 216 | 1963 |
| Poaceae | |
Calamagrostis benthamiana
| (Vickery) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | |
Calamagrostis beyrichiana
| Nees ex Döll | Fl. Bras. 2(3): 53, t. 16 | 1878 |
| Poaceae | |
Calamagrostis bicolor
| (Poir.) J.F. Gmel. | Syst. Veg. 2(1): 172 | 1796 |
| Poaceae | |
Calamagrostis billardierei
| (R. Br.) Steud. | Nomencl. Bot. (ed. 2) 1: 249 | 1840 |
| Poaceae | |
Calamagrostis blanda
| Beal | Grass. N. Amer. 2: 349 | 1896 |
| Poaceae | |
Calamagrostis bogotensis
| (Pilg.) Pilg. | Bot. Jahrb. Syst. 42: 60 | 1908 |
| Poaceae | |
Calamagrostis bolanderi
| Thurb. | Bot. California 2: 280 | 1880 |
| Poaceae | |
Calamagrostis boliviensis
| Hack. | Repert. Spec. Nov. Regni Veg. 6: 156 | 1908 |
| Poaceae | |
Calamagrostis borealis
| C. Laest. | Bidr. Växtligh. 44 | 1860 |
| Poaceae | |
Calamagrostis borii
| Tzvelev | Rast. Tsentr. Azii 4: 83 | 1968 |
| Poaceae | |
Calamagrostis boyacensis
| Swallen & García-Barr. | Caldasia 2(8): 302, f. D | 1943 |
| Poaceae | |
Calamagrostis brachyanthera
| (Stapf) Govaerts | World Checkl. Seed Pl. 3(1): 9 | 1999 |
| Poaceae | ! |
Calamagrostis brachytricha
| Steud. | Syn. Pl. Glumac. 1: 189 | 1855 [1854] |
| Poaceae | |
Calamagrostis bracteolata
| V.N. Vassil. | Bot. Mater. Gerb. Inst. Bot. Akad. Nauk Kazahsk. SSR 8: 52 | 1950 |
| Poaceae | |
Calamagrostis brassii
| Hitchc. | Brittonia 2(2): 116 | 1936 |
| Poaceae | |
Calamagrostis breviaristata
| (Wedd.) Pilg. | Bot. Jahrb. Syst. 42(1): 66 | 1908 |
| Poaceae | |
Calamagrostis brevifolia
| (J. Presl) Steud. | Nomencl. Bot. (ed. 2) 1: 249 | 1840 |
| Poaceae | |
Calamagrostis breviglumis
| (Benth.) Maiden & Betche | Census New S. Wales Pl. 21 | 1916 |