Juncus supinus subsp. eusupinus (Moench) Ascherson & Graebner nom. inval.
Juncus supinus subsp. eusupinus (Moench) Ascherson & Graebner nom. inval. is a synonym sensu Kirschner et al., 2002 of:
Juncus bulbosus Linnaeus, an accepted species name sensu FNA Ed. Comm., 2000.