Aesculus flava is a tree to 30 m tall, sometimes a large shrub.
Leaves deciduous, opposite, palmately compound, leaflets 5, stalks 0.1-0.7 cm long, blades widest above middle, 10-15 cm long, margin finely toothed, veins straight, young leaves hairy below.
Flowers dull yellow, or whitish, with red markings, bilaterally symmetrical, sepals 5, lower halves fused, covered with tiny stalked glands; petals 4 overlapping, the larger two to 3 cm long, broad above, narrow at base, stamens 8; inflorescence 10-17 cm long; blooms May-June.
Fruit a large 1-seeded, 3-parted, smooth capsule to 8 cm.
Wetland status: NL.
Frequency in New York City: Very infrequent. Native to sw. PA and south.
Habitat: Escaped from cultivation.