Two species of deciduous trees, the commonly cultivated C. japonicum and the much less common C. magnificum, sometimes considered a variety, i.e., C. japonicum var. magnificum. However, recent evidence indicates that the two forms are genetically distinct, "supporting their recognition as separate species" (Li, J. et al. HortScience 37(3)595-598. 2002). Native to western China and Japan.
Cercidiphyllum: refers to the similarity of its leaves (phyllum) with those of Cercis (Redbud).