id="p0005">Radula, a leafy liverwort genus, agglutinates a mixture of cosmopolitan and geographically restricted lineages.
id="p0010">Range size was phylogenetically constrained in Australasian and Neotropical subgenera.
id="p0015">Plate tectonics could have played a major role in Radula present distribution.
id="p0020">Niche conservatism seems to account for the restricted geographic ranges in the genus Radula.