Herbertus is a genus of leafy liverworts. In Tasmania, Herbertus is represented by a single species, H. oldfieldianus.

H. oldfieldianus is an uncommon liverwort of subalpine habitats. The leaves are transversely inserted onto the stem and deeply divided to more than halfway into the leaf lamina. Most distinctively, each leaf lobe possesses a vitta (i.e a band of expanded cells running almost the entire length of the middle of the leaf lobe).