Other local names are Koui Soeng( Kan Cahnaburi), Taew(South), Pak Tao (Loei
province), Tiew Som(Nakorn Ratchasima).
family GUTTIFERAE, categorized as trees, are in various type such as Tiew
Khon(hairy Tiew), Tiew Dum(black Tiew), but most favourite type is Tiew
Kao (White Tiew) because its young tips, taste slightly sour and astringent,
is favored for dipping with chili and other local food for Thais, for example,
Jaew, Bamboo shoot soup, meat salad and grass noodle in coconut cream. Tiew's
young tips can also be used to cook sour curry. People in the northeast
like this plant very much. Tiew's flowers are added in vegetable curry.
Tiew is nutritious, plenty of vitamins and mineral salts. Tiew Kao is rich
of Beta-Carotene substances, which is essential for all human's memory because
this substance can be transformed to vitamin A. Especially children who
hugely need adequate vitamin A for their regular growth and resistance to
diseases such as Chicken-eye symptom and night-blinded symptom.
Small to medium size
trees. Leaves shed and simultaneously bud as flowers.
is thorny, bushy branches, tough fiber, white periderm, and brownish-yellow
core with sticky juice often percolated. Trees' heights are 8-15 m.
are tapering with pointed tip, oppositely arranged, smooth edge. Glands
generally scattered on the bottom part of leaves. Bases and ends are tapered.
Leaf's top is glossy and darker colored than leaf's bottom. There are
6-8 pairs of veins, which are curvy and converged to edges. Old leaves
are orange or red.
are pink or white, perfect, axillary, solitary or fasciculate. There are
5 calyx and 5 petals. Oval petals contain numerous stamens, gathered into
Fruits are drupaceous, bobbin shape,
brown or blackish brown, with white film on skin. Skin cracks into 3 pieces
when the fruit is ripe so that seeds, with curvy wings and compressed
inside, can be seen. Fruit stem is 1 cm long, hairy, and generally scattered.
by cultivating seeds and preserved stems. Tiew Kao is quickly grown in all
types of soil and it is medium drought resistant. Tiew Kao can be generally
found in grove or timber forest in the north, northeast, and top part of
the south, where are 200-1000 meters above sea level.