| Lauraceae | |
Williamodendron cinnamomeum
| van der Werff | Novon 1(1): 6–8, f. 1 | 1991 |
| Lauraceae | |
Williamodendron glaucophyllum
| (van der Werff) Kubitzki & H.G. Richt. | Bot. Jahrb. Syst. 109(1): 58 | 1987 |
| Lauraceae | ! |
Williamodendron itamarajuense
| P.L.R. Moraes | Phytotaxa 316(2): 157, f. 4, 8–9 | 2017 |
| Lauraceae | * |
Williamodendron itamarajuensis
| P.L.R. Moraes | Phytotaxa 316(2): 157, f. 4, 8–9 | 2017 |
| Lauraceae | |
Williamodendron quadrilocellatum
| (van der Werff) Kubitzki & H.G. Richt. | Bot. Jahrb. Syst. 109(1): 58 | 1987 |
| Lauraceae | |
Williamodendron sp. a - fl. meso.
| | Fl. Mesoamer. 2(1): | ined |
| Lauraceae | |
Williamodendron spectabile
| Kubitzki & H.G. Richt. | Bot. Jahrb. Syst. 109(1): 50–57, f. 1–3a–c | 1987 |