| Family1 | Species1 | Family2 | Species2 | SCUS score | Similarity |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Brassica juncea | 4.82 | Dis similar |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Brassica napus | 4.87 | Dis similar |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Brassica oleracea var. oleracea | 4.81 | Dis similar |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Brassica rapa | 4.87 | Dis similar |
| Solanaceae | Nicotiana tomentosiformis | Fabaceae | Cajanus cajan | 8.70 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Camelina sativa | 5.05 | Moderately similar |
| Solanaceae | Nicotiana tomentosiformis | Brassicaceae | Capsella rubella | 5.32 | Moderately similar |
| Solanaceae | Nicotiana tomentosiformis | Solanaceae | Capsicum annuum | 9.69 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Chenopodiaceae | Chenopodium quinoa | 9.61 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Fabaceae | Cicer arietinum | 9.14 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Rutaceae | Citrus clementina | 9.36 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Rutaceae | Citrus sinensis | 9.38 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Cucurbitaceae | Cucumis melo | 8.36 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Cucurbitaceae | Cucumis sativus | 8.48 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Cucurbitaceae | Cucurbita maxima | 7.65 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Cucurbitaceae | Cucurbita moschata | 7.47 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Cucurbitaceae | Cucurbita pepo subsp. pepo | 7.43 | Similar |
| Solanaceae | Nicotiana tomentosiformis | Asteraceae | Cynara cardunculus var. scolymus | 6.64 | Moderately similar |
| Solanaceae | Nicotiana tomentosiformis | Apiaceae | Daucus carota subsp. sativus | 9.50 | Highly Similar |
| Solanaceae | Nicotiana tomentosiformis | Malvaceae | Durio zibethinus | 9.04 | Highly Similar |