The following is a list of the collections made by Colin Trapnell 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 |
| 81570 | Craterosiphon quarrei | 1 Sep 1924 | CG Trapnell |
CG Trapnell 1583 | Loamy Kalahari sand | Mwinilunga District; Kanndia [illeg.], of loamy Kalahari sand on Congo-Zambezi watershed. | 0 | Zambia | 1124C4 | W | 1372 | Bark corky, deeply corrugated, a25, fr. small. Tree of branching habit. | -11.750000 | 24.433333 | 4 | ||||||
| 81571 | Craterosiphon quarrei | 29 Apr 1905 | CG Trapnell |
CG Trapnell 1959 | Stony Hill crest above Chysyr Forest | Ndola. Stony Hill crest above Chysyr Forest remains in the Ndd. township. | 0 | Zambia | 1228D3 | W | 1280 | Corky barked small evergreen tree. Same as Trapnell 1800, 1583. Leaves eaten green by natives a "relish". | -12.966667 | 28.633333 | 5 |