Aesculus x carnea

The red horse chestnut is a hybrid between A. hippocastanum and A. pavia that was discovered in Europe in 1812. It is noted for its attractive red flowers.

• Leaves are palmately compound with 5–7 leaflets, double-toothed. Each leaflet is 13–30 cm long, the whole leaf up to 62 cm across, with a long petiole; the terminal leaflet is often the longest.
• Leaf scars are crescent-shaped, with 7 vascular bundle scars in a half-circle.
• Terminal buds are large and sticky, 2–3 cm long.
• Flowers are very showy and red, forming in terminal panicles 15–21 cm long in mid-spring.
• Fruit is a slightly prickly husk 3.7 cm in diameter, each typically containing two or three nuts. Nuts are poisonous.