Hokkaido squirrel (subspecies of red squirrel, Sciurus vulgaris orientis)
Hokkaido sika (deer) (Cervus nippon yesoensis); Yezo sika
Yezo spruce (Picea jezoensis); Jezo spruce
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)
Pteromys volans orii (subspecies of the Siberian flying squirrel, endemic to Hokkaido)
lemon day-lily (Hemerocallis lilioasphodelus, formerly Hemerocallis flava); lemon lily; yellow day-lily
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
Japanese sable (subspecies of sable native to Hokkaido, Martes zibellina brachyura)
chives (Allium schoenoprasum var. schoenoprasum)
Middendorf's whelk (Buccinum middendorffi)
Pacific silverweed (Potentilla egedii var. grandis); Eged's silverweed
black-veined white (species of butterfly, Aporia crataegi)
yellow-winged darter (Sympetrum flaveolum)
Epipactis papillosa (species of orchid)
Angelica ursina (species of perennial herb)
Japanese hackberry (Celtis jessoensis); Jesso hackberry
Tamias sibiricus lineatus (subspecies of Siberian chipmunk native to Hokkaido)
Ochotona hyperborea yesoensis (subspecies of northern pika)