Nine new furanoditerpenoids, jamesoniellide D-J, and two new labdane-t
ype diterpenoids together with 19-acetoxy-ent-labda-8 (17),12E,14-trie
n-3 alpha-ol have been isolated from in vitro cultures of the liverwor
t Jamesoniella autumnalis. The structures were established by spectros
copic methods.