Tetrapanax papyrifer (rice-paper plant, or ้่โtong cao) is an evergreen shrub in the family Araliaceae, the sole species in the genus Tetrapanax. The specific epithet is frequently misspelled as "papyriferum", "papyriferus", or "papyrifera". It is endemic to Taiwan, but widely cultivated in East Asia and sometimes in other tropical regions as well. The species was once included in the genus Fatsia as Fatsia papyrifera. A second species, Tetrapanax tibetanus, is now regarded as a synonym of Merrilliopanax alpinus.