The following is a list of the collections made by Friederich in species name order. The records are of species which occur in Democratic Republic of 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 |
| 93517 | Ziziphus mucronata | 3 Dec 2002 | GR Friederich |
GR Friederich Number unknown | D Lutombi | WIND |
Caprivi: Kwando River. Near Singalamwe, at Nghuru. | 0 | Namibia (Caprivi Strip) | 1723C2 | 0 | 400 cm high; Shrub; Notes: Perennial shrub, 400 cm high. Common in well-drained sand on riverbank, in riverine forest. | -17.659720 | 23.405000 | 5 |