| Hydrangeaceae | |
Hydrangea acuminata
| Siebold & Zucc. | Fl. Jap. 1: 110, pl. 57, f. 2 | 1840 |
| Hydrangeaceae | |
Hydrangea albostellata
| Samain, Najarro & E. Martínez | Phytotaxa 162(4): 183, f. 1–4 | 2014 |
| Hydrangeaceae | |
Hydrangea altissima
| Wall. | Tent. Fl. Napal. 2: t. 50 | 1826 |
| Hydrangeaceae | |
Hydrangea amamiohsimensis
| (Koidz.) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea ampla
| (Chun) Y. De Smet & C. Granados | Taxon 64(4): 751 | 2015 |
| Hydrangeaceae | |
Hydrangea angustifolia
| Hayata | Icon. Pl. Formosan. 1: t. 32 | 1911 |
| Hydrangeaceae | |
Hydrangea angustipetala
| Hayata | J. Coll. Sci. Imp. Univ. Tokyo 30(1): 107–108 | 1911 |
| Hydrangeaceae | |
Hydrangea angustisepala
| Hayata | Icon. Pl. Formosan. 2: 4 | 1912 |
| Hydrangeaceae | |
Hydrangea anomala
| D. Don | Prodr. Fl. Nepal. 211 | 1825 |
| Hydrangeaceae | |
Hydrangea antioquiensis
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 207 | 1930 |
| Hydrangeaceae | |
Hydrangea arborescens
| L. | Sp. Pl. 1: 397 | 1753 |
| Hydrangeaceae | |
Hydrangea arbostiana
| H. Lév. | Bull. Acad. Int. Géogr. Bot. 12: 115 | 1903 |
| Hydrangeaceae | |
Hydrangea arguta
| (Gaudich.) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea ashei
| Harb. | Amer. Midl. Naturalist 11(5): 256–257 | 1928 |
| Hydrangeaceae | |
Hydrangea aspera
| D. Don | Prodr. Fl. Nepal. 211 | 1825 |
| Hydrangeaceae | |
Hydrangea asterolasia
| Diels | Notizbl. Bot. Gart. Berlin-Dahlem 15(3): 370 | 1941 |
| Hydrangeaceae | |
Hydrangea bangii
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 207 | 1930 |
| Hydrangeaceae | |
Hydrangea barbara
| (L.) Schulz, Bernd | Gehölzbestim. Winter 285 | 2014 |
| Hydrangeaceae | |
Hydrangea bifida
| (Maxim.) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea bracteata
| Siebold & Zucc. | Fl. Jap. 1: 126, pl. 92 | 1841 |
| Hydrangeaceae | |
Hydrangea breedlovei
| Samain, Najarro & E. Martínez | Acta Bot. Mex. 126: 6, f. 2A-D. 3A-C | 2019 |
| Hydrangeaceae | |
Hydrangea bretschneideri
| Dippel | Handb. Laubholzk. 3: 320, f. 171 | 1893 |
| Hydrangeaceae | |
Hydrangea brevipes
| Chun | Acta Phytotax. Sin. 3(2): 137–138, pl. 12 | 1954 |
| Hydrangeaceae | |
Hydrangea briquetii
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 207 | 1930 |
| Hydrangeaceae | |
Hydrangea caerulea
| (Stapf) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea candida
| Chun | Acta Phytotax. Sin. 3(2): 129, pl. 9 | 1954 |
| Hydrangeaceae | |
Hydrangea carroniae
| Samain & E. Martínez | Acta Bot. Mex. 126: 11, f. 3D-F, 5A-E | 2019 |
| Hydrangeaceae | |
Hydrangea caucana
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 206 | 1930 |
| Hydrangeaceae | |
Hydrangea caudatifolia
| W.T. Wang & M.X. Nie | Bull. Bot. Res., Harbin 1(1–2): 54–55, f. 4 | 1981 |
| Hydrangeaceae | |
Hydrangea chinensis
| Maxim. | Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7 10(16): 7 | 1867 |
| Hydrangeaceae | |
Hydrangea chloroleuca
| Diels | Notizbl. Bot. Gart. Berlin-Dahlem 9(89): 1027–1028 | 1926 |
| Hydrangeaceae | |
Hydrangea chungii
| Rehder | J. Arnold Arbor. 12(1): 69–70 | 1931 |
| Hydrangeaceae | |
Hydrangea cinerea
| Small | Bull. Torrey Bot. Club 25(3): 148–149 | 1898 |
| Hydrangeaceae | |
Hydrangea coacta
| C.F. Wei | Guihaia 14(2): 116–117, f. 3 | 1994 |
| Hydrangeaceae | |
Hydrangea coenobialis
| Chun | Acta Phytotax. Sin. 3(2): 131–132, pl. 10 | 1954 |
| Hydrangeaceae | |
Hydrangea cordifolia
| Siebold & Zucc. | Fl. Jap. 1: 113, pl. 59, f. 2 | 1839 |
| Hydrangeaceae | |
Hydrangea corylifolia
| (Chun) Y. De Smet & C. Granados | Taxon 64(4): 751 | 2015 |
| Hydrangeaceae | |
Hydrangea crassa
| (Hand.-Mazz.) Y. De Smet & C. Granados | Taxon 64(4): 751 | 2015 |
| Hydrangeaceae | |
Hydrangea cuneatifolia
| Elmer | Leafl. Philipp. Bot. 8: 2825 | 1915 |
| Hydrangeaceae | |
Hydrangea cuspidata
| (Thunb.) Miq. | Ann. Mus. Bot. Lugduno-Batavi 3: 98 | 1867 |
| Hydrangeaceae | |
Hydrangea cyanema
| Nutt. | Bot. Mag. t. 5038 | 1858 |
| Hydrangeaceae | |
Hydrangea daimingshanensis
| (Y.C. Wu) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea davidii
| Franch. | Nouv. Arch. Mus. Hist. Nat., sér. 2 8: 227 | 1885 |
| Hydrangeaceae | |
Hydrangea densifolia
| (Wei) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea diplostemona
| (Donn. Sm.) Standl. | J. Washington Acad. Sci. 18(6): 160 | 1928 |
| Hydrangeaceae | |
Hydrangea discocarpa
| C.F. Wei | Guihaia 14(2): 116–117, f. 2 | 1994 |
| Hydrangeaceae | |
Hydrangea dumicola
| W.W. Sm. | Notes Roy. Bot. Gard. Edinburgh 10(46): 39–40 | 1917 |
| Hydrangeaceae | |
Hydrangea durifolia
| Briq. | Annuaire Conserv. Jard. Bot. Genève 20: 406 | 1919 |
| Hydrangeaceae | |
Hydrangea ecuadorensis
| Briq. | Annuaire Conserv. Jard. Bot. Genève 20: 410 | 1919 |
| Hydrangeaceae | ** |
Hydrangea epiphytica
| Morton ex Haw.-Booth | Hydrangeas 66 | 1950 |
| Hydrangeaceae | |
Hydrangea fauriei
| (Hayata) Y. De Smet & C. Granados | Taxon 64(4): 751 | 2015 |
| Hydrangeaceae | |
Hydrangea febrifuga
| (Lour.) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea florissantia
| Cockerell | Amer. J. Sci., ser. 4 26(156): 541 | 1908 |
| Hydrangeaceae | |
Hydrangea formosana
| Koidz. | Bot. Mag. (Tokyo) 43: 394 | 1929 |
| Hydrangeaceae | |
Hydrangea fulvescens
| Rehder | Pl. Wilson. 1(1): 39–40 | 1911 |
| Hydrangeaceae | |
Hydrangea giraldii
| Diels | Bot. Jahrb. Syst. 29(3–4): 373–374 | 1900 |
| Hydrangeaceae | |
Hydrangea glabra
| Hayata | J. Coll. Agric. Imp. Univ. Tokyo 25(19): 89–90, pl. 6 | 1908 |
| Hydrangeaceae | |
Hydrangea glabrifolia
| Hayata | Icon. Pl. Formosan. 3: 106–107 | 1913 |
| Hydrangeaceae | |
Hydrangea glabripes
| Rehder | Pl. Wilson. 1(1): 30 | 1911 |
| Hydrangeaceae | |
Hydrangea glandulosa
| Elmer | Leafl. Philipp. Bot. 2: 473 | 1908 |
| Hydrangeaceae | |
Hydrangea glaucescens
| (Rehder) Y. De Smet & C. Granados | Taxon 64(4): 751 | 2015 |
| Hydrangeaceae | |
Hydrangea glaucophylla
| C.C. Yang | Acta Phytotax. Sin. 20(4): 475, pl. 1, f. 1–4 | 1982 |
| Hydrangeaceae | |
Hydrangea goudotii
| Briq. | Annuaire Conserv. Jard. Bot. Genève 20: 404 | 1919 |
| Hydrangeaceae | |
Hydrangea gracilis
| W.T. Wang & M.X. Nie | Bull. Bot. Res., Harbin 1(1–2): 49–50, f. 3 | 1981 |
| Hydrangeaceae | |
Hydrangea grossiserrata
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 207 | 1930 |
| Hydrangeaceae | |
Hydrangea hamienkii
| H. Lév. | Bull. Acad. Int. Géogr. Bot. 12: 115 | 1903 |
| Hydrangeaceae | |
Hydrangea hedyotidea
| Chun | Acta Phytotax. Sin. 3(2): 136–137, pl. 11 | 1954 |
| Hydrangeaceae | |
Hydrangea hemsleyana
| Diels | Bot. Jahrb. Syst. 29(3–4): 376 | 1900 |
| Hydrangeaceae | |
Hydrangea heteromalla
| D. Don | Prodr. Fl. Nepal. 211 | 1825 |
| Hydrangeaceae | |
Hydrangea hirsuta
| (Gagnep.) Y. De Smet & C. Granados | Taxon 64(4): 750 | 2015 |
| Hydrangeaceae | |
Hydrangea hirta
| (Thunb.) Siebold | Flora 11: 757 | 1828 |
| Hydrangeaceae | * |
Hydrangea hortensia
| Siebold | Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur. 14(2): 688–689 | 1829 |
| Hydrangeaceae | |
Hydrangea hortensis
| Sm. | Icon. Pict. Pl. Rar. , pl. 12 | 1792 |
| Hydrangeaceae | |
Hydrangea hydrangeoides
| (Siebold & Zucc.) Schulz, Bernd | Gehölzbestim. Winter 285 | 2014 |
| Hydrangeaceae | |
Hydrangea hypoglauca
| Rehder | Pl. Wilson. 1(1): 26 | 1911 |
| Hydrangeaceae | |
Hydrangea indochinensis
| Merr. | J. Arnold Arbor. 23(2): 167–168 | 1942 |
| Hydrangeaceae | * |
Hydrangea inornata
| Standl. | J. Washington Acad. Sci. 17(1): 9 | 1927 |
| Hydrangeaceae | |
Hydrangea integerrima
| (Hook. & Arn.) Engl. | Nat. Pflanzenfam. 3(2a): 76 | 1891 |
| Hydrangeaceae | |
Hydrangea integra
| Hayata | J. Coll. Agric. Imp. Univ. Tokyo 25(19): 90, pl. 7 | 1908 |
| Hydrangeaceae | |
Hydrangea integrifolia
| Hayata | J. Coll. Sci. Imp. Univ. Tokyo 22: 131 | 1906 |
| Hydrangeaceae | |
Hydrangea involucrata
| Siebold | Nov. Actorum Acad. Caes. Leop.-Carol. German. Nat. Cur. 14(2): 691 | 1829 |
| Hydrangeaceae | |
Hydrangea japonica
| Siebold | Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur. 14(2): 689–690 | 1829 |
| Hydrangeaceae | |
Hydrangea jelskii
| Szyszył. | Rozpr. Akad. Umiejetn., Wydz. Mat.-Przyr. 29: 218 | 1895 |
| Hydrangeaceae | |
Hydrangea jiangxiensis
| W.T. Wang & M.X. Nie | Bull. Bot. Res., Harbin 1(1–2): 52–54 | 1981 |
| Hydrangeaceae | |
Hydrangea kamienskii
| H. Lév. | Bull. Acad. Int. Géogr. Bot. 12: 115 | 1903 |
| Hydrangeaceae | |
Hydrangea kawagoeana
| Koidz. | Bot. Mag. (Tokyo) 32: 138 | 1918 |
| Hydrangeaceae | |
Hydrangea kawakamii
| Hayata | J. Coll. Agric. Imp. Univ. Tokyo 25(19): 90–91, pl. 8 | 1908 |
| Hydrangeaceae | |
Hydrangea khasiana
| Hook. f. & Thomson | J. Proc. Linn. Soc., Bot. 2: 75 | 1858 |
| Hydrangeaceae | |
Hydrangea kwangsiensis
| H.H. Hu | J. Arnold Arbor. 12(3): 152–153 | 1931 |
| Hydrangeaceae | |
Hydrangea kwangtungensis
| Merr. | J. Arnold Arbor. 8(1): 7 | 1927 |
| Hydrangeaceae | |
Hydrangea lehmannii
| Engl. | Nat. Pflanzenfam., ed. 2 18a: 207 | 1930 |
| Hydrangeaceae | |
Hydrangea lingii
| G. Hoo | Acta Phytotax. Sin. 1(2): 195–196, pl. 16, f. 2 | 1951 |
| Hydrangeaceae | |
Hydrangea linkweiensis
| Chun | Acta Phytotax. Sin. 3(2): 125–126, pl. 8 | 1954 |
| Hydrangeaceae | |
Hydrangea liukiuensis
| Nakai | Bot. Mag. (Tokyo) 25: 63 | 1911 |
| Hydrangeaceae | |
Hydrangea lobbii
| Maxim. | Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7 10(16): 15 | 1867 |
| Hydrangeaceae | |
Hydrangea longialata
| C.F. Wei | Guihaia 14(2): 118–119, f. 5 | 1994 |
| Hydrangeaceae | |
Hydrangea longifolia
| Hayata | J. Coll. Agric. Imp. Univ. Tokyo 25(19): 91–92 | 1908 |
| Hydrangeaceae | * |
Hydrangea longipes
| Hemsl. | J. Linn. Soc., Bot. 23(155): 273–274 | 1887 |
| Hydrangeaceae | ! |
Hydrangea longipes
| Franch. | Nouv. Arch. Mus. Hist. Nat., sér. 2 8: 227–228 | 1885 |
| Hydrangeaceae | |
Hydrangea luteovenosa
| Koidz. | Bot. Mag. (Tokyo) 39: 4 | 1925 |