Orthosiphon stamineus Leaf Source & Identity
The botanical entity is Orthosiphon stamineus Benth., the Java tea of the Lamiaceae, a Southeast Asian herb with square stems, toothed leaves and spikes of pale flowers whose long stamens give the name cat’s whiskers. Some floras treat the plant as Orthosiphon aristatus. The part used is the leaf. Stem and flower spike are not part of this Orthosiphon stamineus extract.
Leaf is the standard material, and the trade names java tea and misai kucing refer to it. The leaf holds polymethoxylated flavones such as sinensetin, caffeic acid derivatives including rosmarinic acid, and potassium salts, named here only as families. Most of the flavones are poorly water-soluble.












