Children (18 direct children, 18 direct and indirect children):
Plectonema algeriense
Plectonema andinum
Plectonema araucanum
Plectonema capitatum
Plectonema cloverianum
Plectonema corynoideum
Plectonema gloiophilum
Plectonema hodgsonii
Plectonema litorale
Plectonema mirabile
Plectonema monodii
Plectonema polymorphum
Plectonema rugosum
Plectonema subtile
Plectonema tomasinianum
Plectonema volkensii
Plectonema radiosum
Plectonema wollei