The following is a list of the collections made by Boaler 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 |
| 81573 | Craterosiphon quarrei | 10 Oct 1963 | SB Boaler 1026 | Sandy red soil. Middle slope (10 m above lake). Woodland of Brach. florib. | Garden of Mr. Vesey-Fitzgerald, shore of L. Chila, Mbale. [Possibly cultivated]. | 1 | Zambia | 0831C4 | N | 1670 | Underwood tree 4 m. Bark brown corky, square reticulate. Flowers yellow-green, sweet smelling. Rare. | -8.833333 | 31.383333 | 5 |