| Family1 | Species1 | Family2 | Species2 | SCUS score | Similarity |
| Solanaceae | Solanum pennellii | Brassicaceae | Camelina sativa | 5.51 | Moderately similar |
| Solanaceae | Solanum pennellii | Brassicaceae | Capsella rubella | 5.78 | Moderately similar |
| Solanaceae | Solanum pennellii | Solanaceae | Capsicum annuum | 9.64 | Highly Similar |
| Solanaceae | Solanum pennellii | Chenopodiaceae | Chenopodium quinoa | 9.64 | Highly Similar |
| Solanaceae | Solanum pennellii | Fabaceae | Cicer arietinum | 9.77 | Highly Similar |
| Solanaceae | Solanum pennellii | Rutaceae | Citrus clementina | 8.73 | Similar |
| Solanaceae | Solanum pennellii | Rutaceae | Citrus sinensis | 8.76 | Similar |
| Solanaceae | Solanum pennellii | Cucurbitaceae | Cucumis melo | 8.72 | Similar |
| Solanaceae | Solanum pennellii | Cucurbitaceae | Cucumis sativus | 8.83 | Similar |
| Solanaceae | Solanum pennellii | Cucurbitaceae | Cucurbita maxima | 7.87 | Similar |
| Solanaceae | Solanum pennellii | Cucurbitaceae | Cucurbita moschata | 7.71 | Similar |
| Solanaceae | Solanum pennellii | Cucurbitaceae | Cucurbita pepo subsp. pepo | 7.68 | Similar |
| Solanaceae | Solanum pennellii | Asteraceae | Cynara cardunculus var. scolymus | 7.06 | Similar |
| Solanaceae | Solanum pennellii | Apiaceae | Daucus carota subsp. sativus | 9.21 | Highly Similar |
| Solanaceae | Solanum pennellii | Malvaceae | Durio zibethinus | 8.40 | Similar |
| Solanaceae | Solanum pennellii | Brassicaceae | Eutrema salsugineum | 5.07 | Moderately similar |
| Solanaceae | Solanum pennellii | Fabaceae | Glycine max | 7.87 | Similar |
| Solanaceae | Solanum pennellii | Fabaceae | Glycine soja | 7.89 | Similar |
| Solanaceae | Solanum pennellii | Malvaceae | Gossypium arboreum | 9.22 | Highly Similar |
| Solanaceae | Solanum pennellii | Malvaceae | Gossypium hirsutum | 9.22 | Highly Similar |