With the recent taxon change: (Sapindus saponaria drummondii to Sapindus drummondii, all ID's made only to species level failed to change and became Sapindus saponaria. Sapindus drummondii ranges to the west of Sapindus saponaria, making it highly likely that all observations of Sapindus saponaria which lie west of the Mississippi should actually be Sapindus drummondii. See USDA range map: https://plants.sc.egov.usda.gov/core/profile?symbol=SASAD