Lobula

6. Isidia accompanied by conspicuous dorsiventral lobulae in tufts on the thallus surface or as a fringe along the margins of the thallus lobes / 6. Isidiate plants without dorsiventral lobulae.

It may be that morphogenesis derives from the surface as a whole contracting and buckling in some way to generate the lobulae.

Both decapods and insects share the attribute of having lobulas, the neurons of which contribute to retinotopic ensembles of dendritic trees.