Children (19 direct children, 21 direct and indirect children):
Wolffia arrhiza
(tree size 1)
Rootless duckweed
Wolffia globosa
Asian watermeal
Wolffia brasiliensis
(tree size 1)
Brazilian watermeal
Wolffia borealis
Northern watermeal
Wolffia columbiana
Columbia water-meal
Wolffia cylindracea
Asian watermeal
Wolffia elongata
Wolffia microscopica
Wolffia neglecta
Wolffia angusta
Wolffia arhiza
Wolffia australiana
Wolffia denticulata
Wolffia gladiata
Wolffia lingulata
Wolffia repanda
Wolffia welwitschii
Wolffia michelii
Wolffia hyalina