Children (15 direct children, 19 direct and indirect children):
Hard clam
(tree size 1)
Mercenaria mercenaria
Mercenaria campechiensis
(tree size 2)
Mercenaria stimpsoni
Mercenaria texana
Mercenaria hartae
Mercenaria browni
Mercenaria cancellata
Mercenaria carolinensis
Mercenaria cuneata
Mercenaria fulgurans
Mercenaria kennicottii
Mercenaria obtusa
Mercenaria paucilamellata
Mercenaria rutila
(tree size 1)
Mercenaria violacea