Bark
Stems are green, quadrangular and somewhat hairy when young; lower portions may become slightly woody with age.
Syn. Orthosiphon spiralis
Stems are green, quadrangular and somewhat hairy when young; lower portions may become slightly woody with age.
Leaves are simple, dark green and glossy, ovate, 3–16 cm long, with serrated margins and distinct venation, arranged oppositely on square, purplish stems.
Flowers are white to pale purple, borne in terminal clusters, with long, thread-like stamens extending up to 7.5 cm, resembling cat’s whiskers.
Fruit consists of four small nutlets; nutlets are brownish and enclosed within the persistent calyx.
It is widely known as “Java Tea” and has a long history of traditional use in Southeast Asia, particularly in herbal preparations associated with kidney and urinary health.
Tropical & Subtropical Asia to N. Australia.