Lithocarpus glaber
Lithocarpus glaber, the Japanese oak, is a tree species in the genus "Lithocarpus" found in Japan, China and Taiwan. Mitami Shrine, a Shinto shrine in Sakai, Osaka Prefecture, Japan, is famous locally for its comparatively large population of Lithocarpus glaber, known as Shiribukagashi (尻深樫 シリブカガシ). In China, it is called "ke" (柯). In Cantonese, it is called "Seklik" (石櫟). Condensed tannins from "L. glaber" leaves have been analysed through acid-catalyzed degradation in the presence of cysteamine and have a potent free radical scavenging activity.