California buckeye Hippocastanaceae Aesculus
californica (Spach) Nutt.
Leaf: Opposite, deciduous, palmately compound, usually 5 leaflets about 4 to 6 inches long and 1 1/2 to 2 inches wide, margins serrated, dark green and shiny above and paler below.
Flower: White or pale pink inch-long flowers are borne in tall, erect clusters (4 to 8 inches long).
Fruit: Fruits are pear-shaped, smooth leathery capsules, 2 to 3 inches long. Each bears 1 or 2 orange-brown seeds about 1 to 2 inches in diameter.
Twig: Stout; reddish brown when young but darkening with age; smooth.
Bark: Thin (1/2 inch); smooth; gray.
Form: A small tree or shrub reaching 30 feet tall and 5 inches in diameter.
Looks like: horsechestnut - yellow buckeye - bottlebrush buckeye - painted buckeye