Children (30 direct children, 35 direct and indirect children):
Echinus esculentus
(tree size 3)
European edible sea urchin
Echinus tenuispinus
Echinus anchistus
Echinus gilchristi
Echinus multidentatus
Echinus wallisi
Echinus melo
Echinus tylodes
Echinus acutus
(tree size 1)
Echinus elegans
Echinus gracilis
Echinus affinis
Echinus euryporus
Echinus lucunter
Echinus horridus
Echinus robillardi
Echinus atlanticus
(tree size 1)
Echinus coglesi
Echinus dixoni
Echinus dufresnii
Echinus etheridgei
Echinus lacunosus
Echinus lamarcki
Echinus mathaei
Echinus molaris
Echinus multicostatus
Echinus nodulosus
Echinus paucimiliaris
Echinus pileolus
Echinus woodi