Leaf architecture of 30 species representing 2 genera of Aceraceae in China was investigated for the first time. Within the 30 species, 10 species are found with an actinodromous venation pattern, while 20 species are found with a pinnate venation pattern. Within the 20 species with pinnate venation, 10 species are camptodromous, while the other 10 species are craspedodromous. Four types of leaf teeth are detected, viz. entire, toothed, lobed and partite. The secondary veins of most species are unbranched, except for Acer cordatum. Most species have obvious intersecondary veins, except for 4 s...
