Aesculus flava

The yellow buckeye is in the horse chestnut or Hippocastanaceae family and is native to the Ohio Valley and Appalachian Mountains of the Eastern United States. It is a large tree growing up to 40 m tall, the largest of the buckeyes native to the U. S.

• Leaves are opposite, palmately compound with 5 (sometimes 7) leaflets, finely-toothed. Each leaflet is 8–23 cm long and 4–6 cm across, the whole leaf up to 50 cm across, with a long petiole. Fall color often includes attractive shades of yellow-orange.
• Flowers are erect in panicles, yellow to yellow-green, each flower 2–3 cm long with the stamens shorter than the petals (unlike the related Ohio buckeye (A. glabra), where the stamens are longer than the petals) in tall, erect clusters (panicles) in mid-spring.
• Fruit is a round, smooth, spineless, capsule 5–7 cm in diameter, the husk opening in early fall to release 1 or 2 smooth, dark-brown nuts 2.5–3.5 cm across, each one having a white eye (basal scar).
• Twigs are stout; terminal buds are large and non-sticky, with non-ridged bud scales.