)| Author(s) | Year | Title | Publication | Page(s) | Illustration(s) | Comment(s) | Abstract |
|---|---|---|---|---|---|---|---|
| Giddy, C | 1990 | Focus on Encephalartos ngoyanus |
Encephalartos 23: 4-9 |
||||
| Verdoorn, IC | 1949 | Encephalartos ngoyanus. Natal. |
Fl. Pl. Africa 27 |
pls. 1053-1054 | Pls 1053, 1054 | Protologue description | |
| Whitelock, LM | 2002 | The Cycads |
|
222-223 | Plates 318, 319 | Description |
