Isoetes muricata var. braunii (Engelmann) C.F. Reed
Isoetes muricata var. braunii (Engelmann) C.F. Reed is a synonym sensu Hassler & Schmidt, 2014+ of:
Isoetes echinospora subsp. muricata (Durieu) Á. Löve & D. Löve, an accepted subspecies name sensu Löve, 1962.