The following is a list of the collections made by Petheram in species name order. The records are of species which occur in Zambia (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 |
| 74849 | Helichrysum mechowianum var. ceres | 7 Jan 1978 | RW Petheram |
RW Petheram s.n. | SRGH |
On granite kopje at fairly high point. | Farm "Duncombe" belong to Mr Fenwick, c. 4 km West of Concession Village, Mazoe. | 0 | Zimbabwe | 1730B4 | N | 1250 | Not in flower. Cited in Wild 1980: 42, Draft Revision Helichrysum for Flora Zambesiaca. | -17.405660 | 30.898810 | 5 |