The Probert Encyclopaedia of Nature

HORSE CHESTNUT

Horse Chestnut (Aesculus hippocastanum) is a tall deciduous tree of the family Hippocastanaceae native to south-eastern Europe, and introduced into Britain in the middle of the 16th century. The large, sticky brown buds open into large palmate leaves with five to seven leaflets. The flowers are yellowish white and are clustered in dense, erect panicles. The fruit is a green spiny capsule containing one or more hard brown seeds known as 'conkers'.
Research Horse Chestnut