Botanical Name : Clinacanthus nutans (Burm. f.) Lindau
Family Name : ACANTHACEAE
Common Name : Phaya-yo (Thai Name)
Part Used : Leaves
Phaya yo is a shrub 1-3 m high with pubescent branches. Leaves are simple, opposite,
narrowly elliptic oblong or lanceolate, 2.5-13 cm long and 0.5-1.5 cm wide. Flowers are in dense cymes at the top of the branches with bright red, native to tropical Asia and often cultivated. It is an herbaceous plant cultivated for medicinal purposes caused by flavonoids (such as vitexin) and steroids (such as lupeol, betulin and β-sitosterol).