The following is a list of the records made by van Niekerk in species name order.
Click on a column heading to sort the entries in that column
| No | Species | Record date | Recorder(s) | Coll. | Det. | Conf. | Herbaria | Habitat | Location | Loc code(s) | Outing code | Planted code | Country | QDS | Grid ref. | FZ Div | Alt. (m) | Notes | Lat | Long | Loc Acc Code |
| 131425 | Nymphaea sulphurea | 7 Nov 2025 | N Wightman W van Niekerk |
N Wightman | Pond and shallow stream at centre of large dambo grassland plain | Mwinilunga District, North-Western Province | 0 | Zambia | 1124C1 | W | 1395 | -11.694270 | 24.202110 | 6 |