FEW (planta 1 9,18b), TL (7,1104) and DEAF (sub planton) cite the form
planton
as a derivative of planta. Semantically, it is most likely to be a deviant form of platon and is included here.
s.
1ich.zool.sole, European flatfish, Solea vulgaris:
(
c.1290; MS: s.xv1
)
Merlin, plais, planton (M.E. soole) de mier
(O) 336ra
platon (c.1290)