From the leaves of Cordyline ~annifolia R.Br., a new steroidal sapogenin diol has been isolated, to which the trivial name brisbagenin has been given. Mass spectral, infra-red and nuclear magnetic resonance data of brisbagenin and its acetylated derivatives showed the sapogenin to be l~ ,3~ -dihydroxy-5~ ,25~-spirostane. Jones oxidation of brlsbagenin-l-acetate yielded 5~,25~-spirost-l-en-3 one. A compound identical to this synthetic material was isolated from the leaves of an undescribed Cordyline species, but the product was considered to be an artefact produced during its isolation.