Selaginella labutae sp. nov., a new compression herbaceous lycopsid and its spores from the Kladno–Rakovník Basin, Bolsovian of the Czech Republic

A new herbaceous lycopsid, compression species, Selaginella labutae, sp. nov., is described from the Libušín (former Schőller) Mine, near Kladno, Kladno–Rakovník Basin, Czech Republic. The characterization is based on macroscopic observations and the study of in situ spores. The stratigraphic position of the type material is the Radnice Member, Bolsovian, Pennsylvanian. Strobili of S. labutae are the smallest known herbaceous lycopsid cones. Two types of leaves are recognised. Therefore, the new species belongs to Selaginella subgen. Selaginella and not to the subgenus Hexaphyllum Thomas which is characterized by three different types of leaves. Poorly preserved in situ megaspores are of the Triangulatisporites-type and in situ microspores are compared to the dispersed spore species Cirratriradites saturni.