Related how?

Biota (Life)
Eukaryote (Eukarya)
Diaphoretickes (Plants+hc+sar megagroup)
Archaeplastida
Plant (Green plants)
Viridiplantae (Chlorobiota)
Charophyta (Charophytes)
Zygnematophyceae (Zygnemophyceae)
Desmidiales
Desmidiaceae
Cosmarium

Cosmarium polygonum (69541969)

Children (4 direct children, 4 direct and indirect children):

Cosmarium polygonum var. acutius

Cosmarium polygonum var. depressum

Cosmarium polygonum var. hexagonum

Cosmarium polygonum f. rectum