Yokusai Iinuma

Iinuma Yokusai (飯沼慾斎, 1782–1865) was a Japanese botanist and physician.

Iinuma studied botany under Ono Ranzan. He spoke Dutch and was a practitioner of Western medicine. In 1856 he published the Somoku-zusetsu, the first botanical encyclopedia in Japan to use Linnaean taxonomy. The strawberry species Fragaria iinumae is named after him.