The following is a list of the collections made by Willoughby Cleghorn in species name order. The records are of species which occur in Tanzania (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 |
| 22466 | Microlepia speluncae | 9 Dec 1964 | WB Cleghorn |
WB Cleghorn 1074 | SRGH |
Swamp forest of S. guineense in vlei | Makoni, Rusape, Chiduku Reserve | 0 | Zimbabwe | 1832C1 | C | 0 | 0.000000 | 0.000000 | 0 |