wild species
Refers to a species that exists in the wild, as opposed to domesticated or cultivated varieties. Common in biology, agriculture, and conservation contexts.
Many wild species inhabit this region.
Wild species of tomatoes are smaller than cultivated varieties.
在来種 means native or indigenous species, which may be wild or traditionally cultivated, but emphasizes local origin rather than wildness.
Compound of 野生 (yasei, 'wild') and 種 (shu, 'species'). The term is transparent and modern.