| Buxaceae | !! |
Buxaceae
| Dumort. | Comment. Bot. 54 | 1822 |
| Didymelaceae | |
Didymelaceae
| Leandri | Ann. Sci. Nat., Bot., sér. 10, 19: 316 | 1937 |
| Haptanthaceae | ! |
Haptanthaceae
| C. Nelson | Ceiba 42(1): 33 | 2001 [2002] |
| Haptanthaceae | ** |
Haptanthaceae
| Shipunov | Zhurn. Obshchei Biol. 64: 506 | 2003 |
| Pachysandraceae | |
Pachysandraceae
| J. Agardh | Theoria Syst. Pl. 358 | 1858 |
| Stylocerataceae | |
Stylocerataceae
| Takht. ex Reveal & Hoogland | Bull. Mus. Natl. Hist. Nat., Sect. B, Bot. 12: 206 | 1990 |