| Rubiaceae | |
Hymenodictyon antakaranensis
| Razafim. & B. Bremer | Bot. J. Linn. Soc. 152: 338–340, fig. 2 | 2006 |
| Rubiaceae | |
Hymenodictyon berivotrense
| Cavaco | Bull. Soc. Bot. France 111: 179 | 1964 |
| Rubiaceae | |
Hymenodictyon biafranum
| Hiern | Fl. Trop. Afr. 3: 42 | 1877 |
| Rubiaceae | |
Hymenodictyon bracteatum
| Hutch. & Dalziel | Fl. W. Trop. Afr. 2: 70 | 1931 |
| Rubiaceae | ! |
Hymenodictyon bracteatum
| K. Schum. | Bot. Jahrb. Syst. 23: 424 | 1896 |
| Rubiaceae | |
Hymenodictyon decaryi
| Homolle | Notul. Syst. (Paris) 8: 26 | 1939 |
| Rubiaceae | |
Hymenodictyon embergeri
| Cavaco | Bull. Mus. Natl. Hist. Nat., Sér. 2 36(5): 699 | 1965 |
| Rubiaceae | |
Hymenodictyon epidendron
| Mildbr. ex Hutch. & Dalziel | Fl. W. Trop. Afr. 2: 70 | 1931 |
| Rubiaceae | |
Hymenodictyon epiphyticum
| Razafim. & B. Bremer | Bot. J. Linn. Soc. 152: 362–363, fig. 13 | 2006 |
| Rubiaceae | * |
Hymenodictyon excelsum
| (Roxb.) Wall. | Fl. Ind. 2: 149 | 1824 |
| Rubiaceae | ! |
Hymenodictyon excelsum
| (Roxb.) DC. | Prodr. 4: 358 | 1830 |
| Rubiaceae | |
Hymenodictyon fimbriolatum
| De Wild. | Ann. Mus. Congo Belge, Bot. sér. 4, 1: 225 | 1903 |
| Rubiaceae | ! |
Hymenodictyon flaccidum
| Wall. | Fl. Ind. 2: 152 | 1824 |
| Rubiaceae | |
Hymenodictyon floribundum
| (Hochst. & Steud.) B.L. Rob. | Proc. Amer. Acad. Arts 45(17): 404 | 1901 |
| Rubiaceae | |
Hymenodictyon glabrum
| (Cavaco) Razafim. & B. Bremer | Bot. J. Linn. Soc. 152: 345–347, fig. 6 | 2006 |
| Rubiaceae | |
Hymenodictyon gobiense
| Aubrév. & Pellegr. | Bull. Soc. Bot. France 105: 34 | 1958 |
| Rubiaceae | |
Hymenodictyon homolleae
| Homolle | | |
| Rubiaceae | |
Hymenodictyon horsfieldii
| Miq. | Fl. Ned. Ind. 2: 154 | 1856 |
| Rubiaceae | |
Hymenodictyon kaokoensis
| Swanepoel & van Jaarsv. | Phytotaxa 451(4): 258-265, figs. 1-3 | 2020 |
| Rubiaceae | |
Hymenodictyon koordersii
| K. Schum. ex Koord. | Natuurk. Tijdschr. Ned.-Indië 63: 78 | 1904 |
| Rubiaceae | |
Hymenodictyon kurria
| Hochst. | Flora 26: 71 | 1843 |
| Rubiaceae | |
Hymenodictyon leandrii
| Cavaco | Adansonia, n.s. 8: 69 | 1968 |
| Rubiaceae | |
Hymenodictyon louhavate
| Homolle | Notul. Syst. (Paris) 8: 27 | 1939 |
| Rubiaceae | ** |
Hymenodictyon madagascaricum
| Baill. | Hist. Pl. 7: 482 | 1880 |
| Rubiaceae | |
Hymenodictyon madagascaricum
| Baill. ex Razafim. & B. Bremer | Bot. J. Linn. Soc. 152: 349–351, fig. 8 | 2006 |
| Rubiaceae | ** |
Hymenodictyon madagascariense
| Baill. ex Cavaco | Bull. Mus. Natl. Hist. Nat., Sér. 2 36: 701 | 1964 |
| Rubiaceae | |
Hymenodictyon maevatananense
| Cavaco | Bull. Soc. Bot. France 111: 276–277 | 1964 |
| Rubiaceae | * |
Hymenodictyon obovatum
| Wight | Icon. Pl. Ind. Orient. 1: t. 80 | 1838 |
| Rubiaceae | |
Hymenodictyon obovatum
| Wall. | Fl. Ind. 2: 153 | 1824 |
| Rubiaceae | |
Hymenodictyon occidentale
| Homolle | Notul. Syst. (Paris) 8: 27 | 1939 |
| Rubiaceae | |
Hymenodictyon oreophyton
| Hoyle | J. Bot. 75: 168 | 1937 |
| Rubiaceae | ! |
Hymenodictyon orixense
| (Roxb.) Mabb. | Taxon 31(1): 66 | 1982 |
| Rubiaceae | |
Hymenodictyon pachyantha
| K. Krause | Bot. Jahrb. Syst. 57: 26 | 1920 |
| Rubiaceae | |
Hymenodictyon parvifolium
| Oliv. | Hooker's Icon. Pl. 15: 69, t. 1488 | 1885 |
| Rubiaceae | |
Hymenodictyon perrieri
| Drake | Bull. Mens. Soc. Linn. Paris, sér. 2 1: 48 | 1898 |
| Rubiaceae | |
Hymenodictyon reflexum
| Hoyle | J. Bot. 75: 169 | 1937 |
| Rubiaceae | |
Hymenodictyon rheedei
| (Roem. & Schult.) M.R. Almeida & S.M. Almeida | J. Bombay Nat. Hist. Soc. 83(Suppl.): 223 | 1987 |
| Rubiaceae | |
Hymenodictyon scabrum
| Stapf | J. Linn. Soc., Bot. 37: 519 | 1906 |
| Rubiaceae | |
Hymenodictyon septentrionale
| Cavaco | Bull. Soc. Bot. France 111: 276 | 1964 |
| Rubiaceae | |
Hymenodictyon seyrigii
| Cavaco | Bull. Mus. Natl. Hist. Nat., Sér. 2 36(5): 700 | 1965 |
| Rubiaceae | * |
Hymenodictyon thyrsiflorum
| Wall. | Fl. Ind. 2: 151 | 1824 |
| Rubiaceae | |
Hymenodictyon timoranum
| (Span.) Miq. | Fl. Ned. Ind. 2: 153 | 1856 |
| Rubiaceae | ** |
Hymenodictyon timoriense
| Klotzsch ex Walp. | Repert. Bot. Syst. 6: 63 | 1846 |
| Rubiaceae | |
Hymenodictyon tsingy
| Razafim. & B. Bremer | Bot. J. Linn. Soc. 152: 355–357, fig. 10 | 2006 |
| Rubiaceae | |
Hymenodictyon utile
| Wight | Icon. Pl. Ind. Orient. 3: t. 1159 | 1846 |
| Rubiaceae | ** |
Hymenodictyon yunnanense
| Pit. | | |
| Rubiaceae | |
Hymenodyction obovatum
| Wall. | Fl. Ind. 2: 153 | 1824 |