Children (27 direct children, 37 direct and indirect children):
Metridium senile
(tree size 9)
Metridium huanghaiensis
Metridium canum
Metridium dianthus
Metridium farcimen
Metridium exilis
Metridium parvulum
Metridium sinensis
Metridium exile
Metridium huanghaiense
Oulactis
(tree size 1)
Phyllactis
Actinoloba
Metridium achates
Metridium edulis
Metridium excile
Metridium giganteum
Metridium marginatum
Metridium molle
Metridium nodosum
Metridium pallidum
Metridium pictum
Metridium plumosa
Metridium reticulatum
Metridium rhodostomum
Metridium schillerianum
Metridium senilis