Isoetes echinospora var. muricata (Durieu) Engelmann

Isoetes echinospora var. muricata (Durieu) Engelmann is a synonym sensu FNA Ed. Comm., 1993 of:

Isoetes echinospora subsp. muricata (Durieu) Á. Löve & D. Löve, an accepted subspecies name sensu Löve, 1962.