Sapindaceae, the Soapberry Family
Trees, with opposite palmately compound leaves, and showy white or yellowish flowers in panicles in spring; sepals 5; petals 4 or 5; stamens about 7; fruit a smooth brown nut.
| 1a. Leaflets 7; buds viscid; corolla of 5 petals | Horse Chestnut, Aesculus hippocastanum. |
| 1b. Leaflets 5; buds smooth; corolla of 4 petals | Buckeye, Aesculus glabra. |