Selaginella spinosa Palisot de Beauvois nom. illeg.
Selaginella spinosa Palisot de Beauvois nom. illeg. is a synonym sensu Hassler & Schmidt, 2014+ of:
Selaginella selaginoides (Linnaeus) P. Beauvois ex Schrank & Martius, an accepted species name sensu FNA Ed. Comm., 1993.