Five ent-verticillane-type diterpenoids have been isolated from the Japanese liverwort Jackiella javanica, along with previously known sesqui- and di-terpenoids. The chemical shifts of the 1 H and 1 3 C NMR spectra of ent-verticillane-type diterpenoids are given. A new monocyclic diterpenoid, infuscatrienol, three known sesqui- and di-terpenoids, and a bis-bibenzyl derivative have been isolated from the Japanese Jungermannia infusca.