| Dipentodontaceae | !! |
Dipentodontaceae
| Merr. | Brittonia 4: 69, 73 | 1941 |
| Gerrardinaceae | |
Gerrardinaceae
| M.H. Alford | Taxon 55(4): 962 | 2006 |
| Huerteaceae | |
Huerteaceae
| Doweld | Byull. Moskovsk. Obshch. Isp. Prir. Otd. Biol. 105(5): 59 | 2000 |
| Petenaeaceae | |
Petenaeaceae
| Christenh., M.F. Fay & M.W. Chase | Bot. J. Linn. Soc. 164: 23–24, f. 1, 3 | 2010 |
| Tapisciaceae | |
Tapisciaceae
| Takht. | Sist. Magnol. 171 | 1987 |