| Asteraceae | |
Zinnia acerosa
| (DC.) A. Gray | Smithsonian Contr. Knowl. 3(5): 105 | 1852 |
| Asteraceae | |
Zinnia americana
| (Mill.) Olorode & A.M. Torres | Brittonia 22(4): 368 | 1970 [1971] |
| Asteraceae | |
Zinnia angustifolia
| Kunth | Nov. Gen. Sp. (folio ed.) 4: 197 | 1820 [1818] |
| Asteraceae | |
Zinnia anomala
| A. Gray | Smithsonian Contr. Knowl. 3(5): 106, pl. 10 | 1852 |
| Asteraceae | |
Zinnia australis
| F.M. Bailey | Bot. Bull. Dept. Agric., Queensland 9(Botany Bulletin 3): 14 | 1891 |
| Asteraceae | |
Zinnia austrotexana
| B.L. Turner | Phytoneuron 2012–19: 3, f. 1 | 2012 |
| Asteraceae | |
Zinnia barrancae
| M.E. Jones | Contr. W. Bot. 18: 78 | 1933 |
| Asteraceae | |
Zinnia bicolor
| (DC.) Hemsl. | Biol. Cent.-Amer., Bot. 2(8): 153 | 1881 |
| Asteraceae | |
Zinnia bicuspis
| DC. | Prodr. 5: 535 | 1836 |
| Asteraceae | |
Zinnia bidens
| Retz. | Observ. Bot. 5: 28 | 1788 |
| Asteraceae | |
Zinnia citrea
| A.M. Torres | Madroño 15: 215 | 1960 |
| Asteraceae | |
Zinnia coahuilana
| B.L. Turner | Phytoneuron 2012–19: 6, f. 2 | 2012 |
| Asteraceae | * |
Zinnia elegans
| Sessé & Moc. | Pl. Nov. Hisp. 142 | 1887 [1890] |
| Asteraceae | * |
Zinnia elegans
| Jacq. | | |
| Asteraceae | * |
Zinnia elegans
| Jacq. | Collectanea 5: 152 | 1796 [1797] |
| Asteraceae | !! |
Zinnia elegans
| Jacq. | Icon. Pl. Rar. 3: 15, pl. 589 | 1786-1793 [1792] |
| Asteraceae | |
Zinnia flavicoma
| (DC.) Olorode & A.M. Torres | Brittonia 22(4): 368 | 1970 [1971] |
| Asteraceae | |
Zinnia floridana
| Raf. | New Fl. 4: 70–71 | 1836 [1838] |
| Asteraceae | |
Zinnia grandiflora
| Nutt. | Trans. Amer. Philos. Soc., n.s. 7: 348 | 1840 |
| Asteraceae | |
Zinnia greggii
| B.L. Rob. & Greenm. | Proc. Amer. Acad. Arts 32: 16 | 1897 [1896] |
| Asteraceae | |
Zinnia guanajuatensis
| (Calderón & Rzed.) B.L. Turner | Phytoneuron 2012–19: 8 | 2012 |
| Asteraceae | |
Zinnia haageana
| Regel | Gartenflora 10: 355 | 1861 |
| Asteraceae | |
Zinnia haegeana
| L. | | |
| Asteraceae | |
Zinnia hybrida
| Roem. & Usteri | Bot. Mag. (Römer & Usteri) 1: 49–50 | 1787 |
| Asteraceae | |
Zinnia intermedia
| Engelm. | Mem. Tour N. Mexico 107 | 1848 |
| Asteraceae | |
Zinnia jugistyla
| P.G. Wilson | Kew Bull. 13(1): 163 | 1958 |
| Asteraceae | |
Zinnia juniperifolia
| (DC.) A. Gray | Smithsonian Contr. Knowl. 3(5): 105 | 1852 |
| Asteraceae | |
Zinnia leptopoda
| DC. | Prodr. 5: 535 | 1836 |
| Asteraceae | |
Zinnia leucoglossa
| S.F. Blake | Contr. U.S. Natl. Herb. 22(8): 608 | 1924 |
| Asteraceae | |
Zinnia liebmannii
| Klatt | Leopoldina 23: 89 | 1887 |
| Asteraceae | |
Zinnia linearis
| Benth. | Pl. Hartw. 17 | 1839 |
| Asteraceae | |
Zinnia littoralis
| B.L. Rob. & Greenm. | Proc. Amer. Acad. Arts 32(1): 16–17 | 1897 [1896] |
| Asteraceae | |
Zinnia maritima
| Kunth | Nov. Gen. Sp. (folio ed.) 4: 197–198 | 1820 [1818] |
| Asteraceae | |
Zinnia marylandica
| D.M. Spooner, Stimart & T. Boyle | Brittonia 43(1): 8 | 1991 |
| Asteraceae | |
Zinnia mendocina
| Phil. | Anales Univ. Chile 36: 185 | 1870 |
| Asteraceae | |
Zinnia microglossa
| (DC.) McVaugh | Fl. Novo-Galiciana 12: 119 | 1984 |
| Asteraceae | |
Zinnia multiflora
| L. | Sp. Pl. (ed. 2) 2: 1269–1270 | 1763 |
| Asteraceae | |
Zinnia oligantha
| I.M. Johnst. | J. Arnold Arbor. 21: 74 | 1940 |
| Asteraceae | |
Zinnia palmeri
| A. Gray | Proc. Amer. Acad. Arts 22(2): 423–424 | 1887 |
| Asteraceae | * |
Zinnia pauciflora
| L. | Sp. Pl. (ed. 2) 2: 1269 | 1763 |
| Asteraceae | ! |
Zinnia peruviana
| (L.) L. | Syst. Nat. (ed. 10) 2: 1221 | 1759 |
| Asteraceae | |
Zinnia pumila
| A. Gray | Mem. Amer. Acad. Arts, n.s. 4: 81 | 1849 |
| Asteraceae | |
Zinnia purpusii
| Brandegee | Univ. Calif. Publ. Bot. 10(8): 420 | 1924 |
| Asteraceae | |
Zinnia revoluta
| Cav. | Icon. 3(1): 26–27, t. 251 | 1794 [1795] |
| Asteraceae | |
Zinnia schiedeana
| (Less.) Olorode & A.M. Torres | Brittonia 22(4): 268 | 1970 [1971] |
| Asteraceae | |
Zinnia suphurea
| Hort. ex J. Loud. | Ladies' Flower-gard. 204 | 1840 |
| Asteraceae | |
Zinnia tenella
| B.L. Rob. | Proc. Amer. Acad. Arts 43(2): 39 | 1908 [1907] |
| Asteraceae | |
Zinnia tenuiflora
| Jacq. | Icon. Pl. Rar. 3: 15, t. 590 | 1786-1793 [1793] |
| Asteraceae | |
Zinnia tenuis
| (S. Watson) Strother | Madroño 26(4): 173 | 1979 |
| Asteraceae | |
Zinnia venusta
| (A.M. Torres) Olorode & A.M. Torres | Brittonia 22(4): 368 | 1970 [1971] |
| Asteraceae | |
Zinnia verticillata
| Andrews | Bot. Repos. 3: t. 189 | 1801 |
| Asteraceae | |
Zinnia violacea
| Cav. | Icon. 1(3): 57, pl. 81 | 1791 |
| Asteraceae | |
Zinnia zamudiana
| Calderón & Rzed. | Acta Bot. Mex. 36: 78 | 1996 |
| Asteraceae | |
Zinnia zinnioides
| (Kunth) Olorode & A.M. Torres | Brittonia 22(4): 368 | 1970 [1971] |