A New Species of <i>Radula</i> (Radulaceae, Porellales) From Mid‐Cretaceous Kachin Amber

The liverwort genus <i>Radula</i>, one of the largest genera within the order Porellales, is phylogenetically isolated and widely distributed, with many species thriving as epiphytes in diverse ecosystems. Fossil records of <i>Radula</i> are scarce, particularly those with sufficient morphological details for precise taxonomic assignment. In this study, we describe and illustrate a new species, <i>Radula kachinensis</i> sp. nov., from mid-Cretaceous Kachin amber in Myanmar. The fossil exhibits a unique combination of diagnostic features, including broad lobules, short keels, and amentulose axes, with amentulose shoots producing 1-2 additional amentulose shoots. The new discovery sheds light on species diversity during the Cretaceous and offers deeper insights into the morphological traits of this liverwort genus.