From the callus of Cassia occidentalis LINN., six anthraquinones [islandicin, chrysophanol, physcion, emodin, questin, and 7-methylphyscion (1)], a bianthrone (chrysophanol-10, 10'-bianthrone), three tetrahydroanthracenes [germichrysone, methylgermitorosone, and 7-methyltorosachrysone (2)], and a xanthone (pinselin) were isolated. The structures of the two new compounds, 1 and 2, were established on the basis of spectral and chemical evidence.