Modern clubmosses (Lycophytes) are a vestige of their gargantuan carboniferous ancestors that dominated the paleoflora flora for millions of years. The group has a broad global distribution ranging from tundra to...
Diphasiastrum species have been assumed to produce homoploid hybrids whose reproductive competence is still a matter of debate. Using flow cytometry, Bennert et al. demonstrate that the three Central European primary...