Clausena lansium, also known as a wampee (Clausena wampi), is a
species of strongly scented evergreen trees 3-8 m tall, in the
family Rutaceae, native to southeast Asia.
The leaves are smooth and dark green in color. The flowers
appearing in late March are white, with 4-5 petals, about 3-4 mm
diameter. The fruit is oval about 3 cm long and 2 cm in diameter,
containing 3 to 5 seeds that occupy ~ 40-50 % of the fruit volume.
The tree reaches a maximum height of 20 meters. It grows well in
tropical or subtropical conditions and is susceptible to cold. Wampee trees grow well in a wide range of soil but prefer rich loam.
Seeds of Clausena lansium, scale on the left is 1 mm per division.
It is cultivated for its fruit which resemble grapes in
appearance and are popular in China, Vietnam and the Philippines,
Malaysia and Indonesia. The tree is less frequently grown in India,
Sri Lanka and Queensland, and occasionally in Florida and Hawaii.