Cycas revoluta (Sotetsu [Japanese ソテツ], sago palm, king sago, sago cycad, Japanese sago palm), is a species of gymnosperm in the family Cycadaceae, native to southern Japan including the Ryukyu Islands. It is one of several species used for the production of sago, as well as an ornamental plant.
Cycads' only relation to the true palms (Arecaceae) is that both are seed plants. The Latin specific epithet revoluta means 'curled back', in reference to the leaves. This is also called kungi (comb) palm ...