Related how?

Biota (Life)
Eukaryote (Eukarya)
Diaphoretickes (Plants+hc+sar megagroup)
Archaeplastida
Plant (Green plants)
Viridiplantae (Chlorobiota)
Streptophyta (Streptophytina)
Embryophyte (Land plants)
Tracheophyta (Higher plants)
Polypodiophyta
Polypodiophytina

Ophioglossopsida (98970040)

Children (2 direct children, 942 direct and indirect children):

Marattiidae (tree size 471)

Ophioglossidae (tree size 469)