Yezo (northern part of Meiji-era Japan, esp. Hokkaido, but also Sakhalin and the Kuril Islands); Edo-period realm of the Ainu (as opposed to the Japanese) comprising most of Hokkaido
Yezo spruce (Picea jezoensis); Jezo spruce
Hokkaido squirrel (subspecies of red squirrel, Sciurus vulgaris orientis)
Hokkaido sika (deer) (Cervus nippon yesoensis); Yezo sika
Hokkaido wolf (Canis lupus hattai, extinct)
Hokkaido brown bear (Ursus arctos yesoensis)
Siberian ginseng (Eleutherococcus senticosus); eleuthero; ciwujia
sargent cherry (Prunus sargentii)
hazel grouse (Bonasa bonasia)
lemon day-lily (Hemerocallis lilioasphodelus, formerly Hemerocallis flava); lemon lily; yellow day-lily
Pteromys volans orii (subspecies of the Siberian flying squirrel, endemic to Hokkaido)
black-veined white (species of butterfly, Aporia crataegi)
Pacific silverweed (Potentilla egedii var. grandis); Eged's silverweed
Japanese sable (subspecies of sable native to Hokkaido, Martes zibellina brachyura)
Ochotona hyperborea yesoensis (subspecies of northern pika)
Epipactis papillosa (species of orchid)
yellow-winged darter (Sympetrum flaveolum)
Middendorf's whelk (Buccinum middendorffi)
chives (Allium schoenoprasum var. schoenoprasum)
Tamias sibiricus lineatus (subspecies of Siberian chipmunk native to Hokkaido)
Angelica ursina (species of perennial herb)
Japanese hackberry (Celtis jessoensis); Jesso hackberry