| SPECIES | Mean scores of preference for Mortars | Mean scores of preference for Pestles |
| Vitellaria paradoxa | 4.05 | 2.69 |
| Prosopis africana | 3.58 | 4.51 |
| Terminalia glaucescens | 1.12 | 1.32 |
| Pericopsis laxiflora | 0.05 | 1.03 |
| Pterocarpus erinaceus | 0.89 | 0.36 |
| Azadirachta indica | 0.68 | 0.87 |
| Khaya senegalensis | 0.46 | 0.29 |
| Afzelia africana | 0.38 | 0.11 |
| Burkea africana | 0.12 | 0.44 |
| Pseudocedrela kotschyi | 0.49 | 0.33 |
| Daniellia oliveri | 0.08 | 0 |
| Manilkara multinervis | 0.21 | 0.02 |
| Parkia bilglobosa | 0.05 | 0 |
| Eucalyptus camaldulensis | 0.07 | 0 |
| Acacia auriculiformis | 0.04 | 0 |
| Anogeissus leiocarpus | 0.03 | 0.07 |
| Lophira lanceolata | 0.08 | 0.04 |
| Milicia excelsa | 0.05 | 0.03 |
| Zanthoxylum zanthoxyloides | 0.08 | 0.18 |
| Diospyros mespiliformis | 0.09 | 0.03 |
| Isoberlinia doka | 0.09 | 0.01 |
| Detarium microcarpum | 0.09 | 0 |
| Bridelia ferruginea | 0 | 0 |
| Holarrhena floribunda | 0 | 0 |
| Mangifera indica | 0 | 0 |
| Gmelina arborea | 0 | 0 |
| Albizia zygia | 0 | 0 |
| Antiaris toxicaria | 0 | 0 |
| Dialium guineense | 0.01 | 0.03 |
| Lannea barteri | 0.02 | 0 |
| Swartzia madagascariensis | 0 | 0 |