Current Understanding
The current circumscription of Sapindaceae encompasses the traditional Aceraceae and Hippocastanaceae as tribes in subfamily Hippocastanoideae. Although the classification at subfamilial level is fairly well-established, the circumscription at tribal and generic level remains only partially resolved, especially in the larger subfamily Sapindoideae, which has led the most recent revision to treat the majority of these genera without placing them in a tribe. Another recent study hints at even more incongruity between traditional circumscription and molecular evidence.
Recent changes have included the synonymization of Distichostemon with Dodonaea, and Neotina and Tinopsis with Tina. Additionally, not all authors agree about the broad circumscription that ensues from placing Xanthoceras as the sister group to the three traditional families as the resulting Sapindaceae sensu lato, unlike the traditional families, is difficult to characterize. As a result the elevation of Xanthoceroideae to family level was recently proposed, which would remove from Sapindaceae those six genera currently placed in that subfamily and Hippocastanoideae.
This list follows Acevedo-RodrÃguez et al. as modified by more recent research.
Read more about this topic: List Of Sapindaceae Genera
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