| Stable identifier | Scientific Name | Media |
| http://herbarium.bgbm.org/object/B100153978 | Erica purgatoriensis H. A. Baker |
|
| http://herbarium.bgbm.org/object/B100153979 | Erica pudens H. A. Baker |
|
| Stable identifier | Scientific Name | Media |
| https://w.jacq.org/W19630002555 | Erica riparia H. A. Baker |
|
| https://w.jacq.org/W19860001335 | Erica pudens H. A. Baker |
|
| https://w.jacq.org/W19610014400 | Erica leucotrachela H. A. Baker |
|
| https://w.jacq.org/W19610014399 | Erica bakeri T. M. Salter |
|
Claimed natural history specimens collected or identified by Hugh Arthur Baker
| Scientific Name | Country | Institution | Date |
| Erica purgatoriensis H.A.Baker | South Africa | RBGE | 1964-10-17 |
| Erica pudens H.A. Baker | South Africa | RBGE | 1965-09-19 |
| Erica hendricksei H.A.Baker | South Africa | RBGE | 1967-02 |
| Erica bakeri T.M. Salter | South Africa | RBGE | 1954-08 |
| Solanum africanum Mill. | South Africa | NHMUK | |
| Erica pudens H.A. Baker | South Africa | MO | |
| Erica leucotrachela H.A. Baker | South Africa | MO | |
| Erica pauciovulata H.A. Baker | South Africa | MO | |
| Erica purgatoriensis H.A. Baker | South Africa | MO | |
| Erica hendricksei var. alba H.A. Baker | South Africa | MO |