A genus of three species of deciduous spiny shrubs, usually 1–3 m tall, in the family Rosaceae. They are native to eastern Asia in Japan, China and Korea. These plants are related to the Quince (Cydonia oblonga) and the Chinese Quince (Pseudocydonia sinensis), differing in the serrated leaves, and in the flowers having deciduous sepals and styles that are connate at the base.

The leaves are alternately arranged, simple, and have a serrated margin. The flowers are 3–4.5 cm diameter, with five petals, and are usually bright orange-red, but can be white or pink; flowering is in late winter or early spring. The fruit is a pome with five carpels; it ripens in late autumn.

Gardeners in the West often refer to these species as "flowering quince" (although all quince have flowers). In the 19th and 20th centuries the name "japonica" was widely used (although, since japonica is a specific epithet which is shared by many other plants, this common name is particularly unhelpful). Originally used to refer to C. japonica, the latter common name was (and still is) often loosely applied to Chaenomeles, regardless of their species. The most commonly cultivated chaenomeles referred to as "japonica" are actually the hybrid C. × superba and C. speciosa, not C. japonica.

from: Wikipedia