| Plantaginaceae | |
Callitriche acroptera
| (Clavaud) Rouy | Fl. France 12: 184 | 1910 |
| Plantaginaceae | |
Callitriche aeolica
| Candargy | Bull. Soc. Bot. France 44: 157 | 1897 |
| Plantaginaceae | |
Callitriche aestivalis
| Thuill. | Fl. Env. Paris 2 | 1790 |
| Plantaginaceae | |
Callitriche alata
| A.I. Baranov & Skvortsov | Quart. J. Taiwan Mus. 19: 160 | 1966 |
| Plantaginaceae | |
Callitriche albomarginata
| Fassett | Rhodora 53: 171 | 1951 |
| Plantaginaceae | |
Callitriche alpina
| Schur | Oesterr. Bot. Z. 8: 403 | 1858 |
| Plantaginaceae | |
Callitriche amblyocarpa
| Scheidw. ex Hegelm. | Monogr. Callitriche 61 | 1864 |
| Plantaginaceae | |
Callitriche anceps
| Fernald | Rhodora 10(111): 51–52 | 1908 |
| Plantaginaceae | |
Callitriche androgyna
| L. | Cent. Pl. I 31 | 1775 |
| Plantaginaceae | |
Callitriche angustifolia
| Hoppe | Bot. Taschenb. Anfänger Wiss. Apothekerkunst 3: 160 | 1792 |
| Plantaginaceae | * |
Callitriche angustifolia
| Gilib. | Excerc. Phyt. 2: 421 | 1792 |
| Plantaginaceae | |
Callitriche anisoptera
| Schotsman | Bull. Mus. Natl. Hist. Nat., B, Adansonia, sér. 4 10: 7 | 1988 |
| Plantaginaceae | |
Callitriche antarctica
| Engelm. ex Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 9: 20 | 1867 |
| Plantaginaceae | |
Callitriche aquatica
| Huds. | Fl. Angl. (ed. 2) 439 | 1778 |
| Plantaginaceae | |
Callitriche asagraei
| Hegelm. | Monogr. Callitriche 54–55, pl. 3, f. 9, pl. 4, f. 1 | 1864 |
| Plantaginaceae | |
Callitriche attenuata
| Delastre | Fl. Vienne 144 | 1842 |
| Plantaginaceae | |
Callitriche aucklandica
| R. Mason | Austral. J. Bot. 7: 314 | 1959 |
| Plantaginaceae | |
Callitriche austinii
| Engelm. | Manual (ed. 5) 428 | 1867 |
| Plantaginaceae | * |
Callitriche autumnalis
| L. | Fl. Suec., ed. 2 (Linnaeus) 2 | 1755 |
| Plantaginaceae | |
Callitriche bengalensis
| Petrov | Izv. Glavn. Bot. Sada S.S.S.R. 27: 358 | 1928 |
| Plantaginaceae | ** |
Callitriche berteroana
| Steud. | Nomencl. Bot. (ed. 2) 1: 259 | 1840 |
| Plantaginaceae | |
Callitriche berteroana
| (Hegelm.) Lansdown & Hassemer | Phytotaxa 501(1): 93 | 2021 |
| Plantaginaceae | |
Callitriche bifida
| (L.) Morong | Mem. Torrey Bot. Club 5(14): 215 | 1894 |
| Plantaginaceae | |
Callitriche bolanderi
| Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 10: 116-117 | 1868 [1869] |
| Plantaginaceae | |
Callitriche bolusiana
| Schönland & Pax ex Engl. | Veg. Erde 9(III 2): 169 | 1921 |
| Plantaginaceae | |
Callitriche bolusii
| Schönland & Pax ex Marloth | in Fl. S. Afr. 2(2): 141 | 1925 |
| Plantaginaceae | * |
Callitriche brachycarpa
| Sennen | Bull. Soc. Bot. France 73: 650 | 1926 [1927] |
| Plantaginaceae | ! |
Callitriche brachycarpa
| Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 10: 115 | 1868 [1869] |
| Plantaginaceae | |
Callitriche brevifolia
| Pursh | Fl. Amer. Sept. 1: 3 | 1813 |
| Plantaginaceae | |
Callitriche brevistyla
| Lansdown | Watsonia 26: 116 | 2006 |
| Plantaginaceae | |
Callitriche brutia
| Petagna | Inst. Bot. 2: 10 | 1787 |
| Plantaginaceae | |
Callitriche capillaris
| Parl. | Fl. Ital. 4: 423 | 1869 |
| Plantaginaceae | |
Callitriche capricorni
| R. Mason | Austral. J. Bot. 7: 307 | 1959 |
| Plantaginaceae | |
Callitriche cespitosa
| Schultz | Prodr. Fl. Starg. 2 | 1806 |
| Plantaginaceae | |
Callitriche christensenii
| Christoph. | Sci. Results Norweg. Antarc. Exped. 13: 7 | 1934 |
| Plantaginaceae | |
Callitriche ciliata
| Lansdown & Hassemer | Phytotaxa 501(1): 094, f. 1(d–e) | 2021 |
| Plantaginaceae | |
Callitriche coerulescens
| Salm-Dyck | | |
| Plantaginaceae | |
Callitriche compressa
| N.E. Br. | Bull. Misc. Inform. Kew 1912: 276 | 1912 |
| Plantaginaceae | |
Callitriche concinna
| Lansdown & Hassemer | Phytotaxa 501(1): 094, f. 1(f) | 2021 |
| Plantaginaceae | |
Callitriche confervoides
| Thuill. ex Link | Jahrb. Gewächsk. 3: 30 | 1820 |
| Plantaginaceae | |
Callitriche connata
| Raf. | Med. Repos. III, 2: 408 | 1811 |
| Plantaginaceae | |
Callitriche cophocarpa
| Sendtn. | Veg. Südbayerns 773 | 1854 |
| Plantaginaceae | |
Callitriche cophocarpa
| Sendtner | | |
| Plantaginaceae | |
Callitriche cribrosa
| Schotsman | Bull. Centr. Etudes Rech. Sci. 5: 317 | 1965 |
| Plantaginaceae | |
Callitriche cruciata
| Raf. | Med. Repos. 3(2): 408 | 1811 |
| Plantaginaceae | * |
Callitriche cruciata
| Lebel ex Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 9: 38 | 1867 |
| Plantaginaceae | |
Callitriche cuneifolia
| A. Braun ex Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 9: 21 | 1867 |
| Plantaginaceae | |
Callitriche cyclocarpa
| Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 10: 116 | 1868 [1869] |
| Plantaginaceae | |
Callitriche cycloptera
| Schotsman | Bull. Mus. Natl. Hist. Nat., B, Adansonia, sér. 4 1985: 116 | 1985 |
| Plantaginaceae | |
Callitriche dacryoidea
| Lansdown & Hassemer | Phytotaxa 501(1): 095, f. 1(g) | 2021 |
| Plantaginaceae | |
Callitriche decussata
| Link | Jahrb. Gewächsk. 3: 30 | 1820 |
| Plantaginaceae | * |
Callitriche decussata
| Schur | Enum. Pl. Transsilv. 217 | 1866 |
| Plantaginaceae | |
Callitriche deflexa
| A. Braun ex Hegelm. | Monogr. Callitriche 58, pl. 3, f. 2, pl. 4, f. 4 | 1864 |
| Plantaginaceae | |
Callitriche dioica
| Schur | Sert. Fl. Transsilv. 10: 98 | 1859 |
| Plantaginaceae | |
Callitriche dioica
| Petagna | Inst. Bot. 2: 10 | 1787 |
| Plantaginaceae | |
Callitriche drummondii
| Hegelm. | Monogr. Callitriche 60, pl. 4, f. 3 | 1864 |
| Plantaginaceae | |
Callitriche dubia
| Hoffm. ex Roth | Tent. Fl. Germ. 1: 389 | 1788 |
| Plantaginaceae | |
Callitriche ecarinata
| Lansdown & Hassemer | Phytotaxa 501(1): 097, f. 1(i) | 2021 |
| Plantaginaceae | |
Callitriche elegans
| Petrov | Izv. Glavn. Bot. Sada S.S.S.R. 27: 360 | 1928 |
| Plantaginaceae | |
Callitriche euautumnalis
| Syme | Engl. Bot. ed. 3B, 8: 122 | 1868 |
| Plantaginaceae | |
Callitriche euverna
| Syme | Engl. Bot. ed. 3B, 8: 119 | 1868 |
| Plantaginaceae | |
Callitriche exalata
| (Tzvelev) Tzvelev | Opred. Sosud. Rast. Severo-Zap. Rossii 680 | 2000 |
| Plantaginaceae | |
Callitriche fallax
| Petrov | Izv. Glavn. Bot. Sada S.S.S.R. 27: 358 | 1928 |
| Plantaginaceae | |
Callitriche fassettii
| Schotsman | Acta Bot. Neerl. 15(2): 477–483, f. 1–2 | 1966 |
| Plantaginaceae | |
Callitriche favargera
| Schotsman | Bot. Helv. 94: 288 | 1984 [1985] |
| Plantaginaceae | |
Callitriche fehmedianii
| Majeed Kak & Javeid | J. Bombay Nat. Hist. Soc. 79: 167 | 1982 |
| Plantaginaceae | |
Callitriche fimbriata
| Tzvelev | | |
| Plantaginaceae | |
Callitriche fissa
| Lej. | Rev. Fl. Spa 1 | 1824 |
| Plantaginaceae | |
Callitriche foliosa
| Raf. | Med. Repos. 5: 354 | 1808 |
| Plantaginaceae | * |
Callitriche fontana
| Scop. | Fl. Carniol. ed. 2, 2: 251 | 1772 |
| Plantaginaceae | |
Callitriche font-queri
| P. Allorge | Bull. Soc. Bot. France 88: 242 | 1941 |
| Plantaginaceae | |
Callitriche fuscicarpa
| Lansdown | Novon 16(3): 354, pl. 1, f. B | 2006 |
| Plantaginaceae | |
Callitriche genuina
| Ducommun | Taschenb. Schweiz. Bot. 243 | 1869 |
| Plantaginaceae | |
Callitriche glareosa
| Lansdown | Novon 16(3): 355, pl. 1, f. C | 2006 |
| Plantaginaceae | |
Callitriche glomerata
| Thuill. ex Link | Jahrb. Gewächsk. 3: 30 | 1820 |
| Plantaginaceae | |
Callitriche graminea
| Link | Jahrb. Gewächsk. 3: 30 | 1820 |
| Plantaginaceae | |
Callitriche hamulata
| Kütz. ex W.D.J. Koch | Syn. Fl. Germ. Helv. 246 | 1837 |
| Plantaginaceae | |
Callitriche hedbergiorum
| Schotsman | Bull. Mus. Natl. Hist. Nat., B, Adansonia, sér. 4 10: 13 | 1988 |
| Plantaginaceae | |
Callitriche hegelmaieriana
| Lansdown & Hassemer | Phytotaxa 501(1): 098, f. 1(j) | 2021 |
| Plantaginaceae | |
Callitriche hermaphroditica
| L. | Cent. Pl. I 31 | 1755 |
| Plantaginaceae | |
Callitriche heterophylla
| Pursh | Fl. Amer. Sept. 1: 3 | 1814 [1813] |
| Plantaginaceae | |
Callitriche heteropoda
| Engelm. ex Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 9: 40–41 | 1867 |
| Plantaginaceae | |
Callitriche × hybrida
| E.H.L. Krause | Deutschl. Fl. (Sturm), ed. 2. ed. 2, 7: 139 | 1902 |
| Plantaginaceae | * |
Callitriche intermedia
| Hoppe | Bot. Taschenb. Anfänger Wiss. Apothekerkunst 3: 159 | 1792 |
| Plantaginaceae | ! |
Callitriche intermedia
| Hoffm. | Deutschl. Fl. 1: 2 | 1791 |
| Plantaginaceae | |
Callitriche japonica
| Engelm. ex Hegelm. | Verh. Bot. Vereins Prov. Brandenburg 10: 113–114 | 1868 [1869] |
| Plantaginaceae | |
Callitriche keniensis
| Schotsman | Bull. Mus. Natl. Hist. Nat., B, Adansonia, sér. 4 10: 10 | 1988 |
| Plantaginaceae | |
Callitriche kuetzingii
| Rupr. | Fl. Ingr. 378 | 1860 |
| Plantaginaceae | |
Callitriche latifolia
| Link ex Steud. | Nomencl. Bot. ed. 2, 1: 259 | 1840 |
| Plantaginaceae | * |
Callitriche latifolia
| Gilib. | Excerc. Phyt. 2: 421 | 1792 |
| Plantaginaceae | |
Callitriche lechleri
| (Hegelm.) Fassett | Rhodora 53(632): 191 | 1951 |
| Plantaginaceae | |
Callitriche lenisulca
| Clavaud | Actes Soc. Linn. Bordeaux 44: 43 | 1890 [1891] |
| Plantaginaceae | |
Callitriche linearis
| Pursh | Fl. Amer. Sept. 1: 3 | 1813 |
| Plantaginaceae | |
Callitriche longifolia
| Druce | Rep. Bot. Soc. Exch. Club Brit. Isles 3: 438 | 1913 |
| Plantaginaceae | |
Callitriche longipedunculata
| Morong | Bull. Torrey Bot. Club 18(8): 236 | 1891 |
| Plantaginaceae | |
Callitriche longistyla
| Norman | Skr. Vidensk.-Selsk. Christiania, Math.-Naturvidensk. Kl. 1892: 28 | 1892 |
| Plantaginaceae | |
Callitriche lusitanica
| Schotsman | Bol. Soc. Brot. II, 35: 112 | 1961 |
| Plantaginaceae | |
Callitriche macropteryx
| Hegelm. | Monogr. Callitriche 59 | 1864 |
| Plantaginaceae | |
Callitriche mandonis
| Van Heurck & Müll. Arg. | Observ. Bot. 2: 136 | 1871 |
| Plantaginaceae | |
Callitriche marginata
| Torr. | Pacif. Railr. Rep. 4(5): 135 | 1857 |