Two Taiwanese liverworts, Jungermannia appressifolia and J. infusca, were chemically investigated. Jungermannia appressifolia elaborated two new labdane-type diterpenoids, labda-7,14-dien-9,13-diol and 13-hydroxy-7-oxo-labda-8,14-diene, along with the known labda-8,14-dien-13-ol. Jungermannia infusca produced two macrocyclic bis(bibenzyls), marchantin C and riccardin C, as its major constituents demonstrating the fourth chemo-type of this complex species.
