Synopsis of Abutilon (Malvoideae, Malvaceae) in the state of São Paulo, Brazil

Abutilon is represented in the state of Sao Paulo by 18 species mainly distributed in the Atlantic Forest, especially in dense rainforest. This work includes an identification key, illustrations, and comments on morphology, habitat, geographical distribution and conservation status. A new species ( Abutilon costicalyx ), three new synonyms, and three new records for Sao Paulo are presented.