The following is a list of the collections made by Boay in species name order. The records are of species which occur in Botswana (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 |
| 41400 | Salvinia molesta | Mar 1957 | H Boay |
H Boay s.n. | SRGH |
Planted in irrigation dam | Harleigh Farm (E.C.Harrington), silverbow Rd., Rusape | 0 | Zimbabwe | 1832C1 | C | 0 | 0.000000 | 0.000000 | 2 |