The following is a list of the collections made by Mary Richards in species name order. The records are of species which occur in Uganda (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 |
| 80739 | Acacia hockii | 15 Sep 1956 | HM Richards |
HM Richards 6201 | Side of road, dry. | Mbala District; Kalambo Falls Road. | 125 | 0 | Zambia | 0831C2 | N | 1500 | Shrub 8 ft. | 5 | |||||||
| 80740 | Acacia hockii | 9 May 1966 | HM Richards |
HM Richards 21479 | Among long grass in scattered woodland near stream on loam soil. | Chianga Stream near Kalambo Road. | 0 | Zambia | 0831C4 | N | 1350 | Tree 15-20 ft. high. Bark dark, flaking off when cut, pale buff beneath, flowers yellow. | 5 |