The following is a list of the collections made by Jacobsen in species name order. The records are of species which occur in Democratic Republic of the Congo (either as a native/naturalised species or as a cultivated species).
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| No | Species | Record date | Recorder(s) | Coll. | Det. | Conf. | Herbaria | Habitat | Location | Loc code | Outing code | Planted code | Country | QDS | Grid ref. | FZ Div | Alt. (m) | Notes | Lat | Long | Loc Acc Code |
| 48736 | Adiantum capillus-veneris | 1 May 1959 | N Jacobsen |
N Jacobsen 637 | SRGH |
Rocky wall of Kove river in deep shade. Also common in Sengwa gorge. | Sengwa Research Station | 0 | Zimbabwe | 1828A2 | N | 0 | 0.000000 | 0.000000 | 2 | ||||||
| 48928 | Adiantum lunulatum | 1 May 1969 | N Jacobsen |
N Jacobsen 635 | SRGH |
Growing in deep shade on the bank of the Kove River, together with Asplenium sandersonii. | Sengwa Research station, Gokwe district | 0 | Zimbabwe | 1828A2 | N | 0 | Both grew in Sengwa Gorge as well | 0.000000 | 0.000000 | 2 | |||||
| 35025 | Anemia angolensis | 13 Apr 1969 | N Jacobsen |
N Jacobsen 593 | SRGH |
In gully in stoney ridge on Tivuli Rd. | Gokwe, Sengwa Research station | 0 | Zimbabwe | 1828A1 | PK29-89- | N | 0 | 0.000000 | 0.000000 | 5 |