Ungnadia speciosa   Endl. Texas buckeye  - Sapindaceae

The seeds of the Texas buckeye or false buckeye, Ungnadia speciosa, serve as marbles for children and are strung into necklaces.  Three-lobed capsules with three shiny, dark brown seeds grow on a deciduous shrubby tree which inhabits limestone soils along stream banks and canyons in the southwestern United States and northern Mexico.