| Family1 | Species1 | Family2 | Species2 | SCUS score | Similarity |
| Solanaceae | Nicotiana sylvestris | Fabaceae | Medicago truncatula | 9.09 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Cucurbitaceae | Momordica charantia | 8.20 | Similar |
| Solanaceae | Nicotiana sylvestris | Musaceae | Musa acuminata subsp. malaccensis | 6.31 | Moderately similar |
| Solanaceae | Nicotiana sylvestris | Solanaceae | Nicotiana attenuata | 9.91 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Solanaceae | Nicotiana sylvestris | 10.00 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Solanaceae | Nicotiana tabacum | 9.96 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Solanaceae | Nicotiana tomentosiformis | 9.97 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Oryza brachyantha | 4.48 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Oryza sativa Japonica Group | 4.47 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Panicum hallii | 4.19 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Panicum virgatum | 4.40 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Fabaceae | Phaseolus vulgaris | 8.78 | Similar |
| Solanaceae | Nicotiana sylvestris | Fabaceae | Prosopis alba | 9.07 | Highly Similar |
| Solanaceae | Nicotiana sylvestris | Brassicaceae | Raphanus sativus | 4.67 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Euphorbiaceae | Ricinus communis | 8.97 | Similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Saccharum officinarum | 6.49 | Moderately similar |
| Solanaceae | Nicotiana sylvestris | Pedaliaceae | Sesamum indicum | 8.58 | Similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Setaria italica | 4.33 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Poaceae | Setaria viridis | 4.27 | Dis similar |
| Solanaceae | Nicotiana sylvestris | Solanaceae | Solanum lycopersicum | 9.39 | Highly Similar |