marginal placentation(n = noun.plant) ventral placentation - with ovules borne on the wall along the ventral suture of a simple ovary;
is a kind of placentation

apical placentation, axile placentation, basal placentation, free central placentation, lamellate placentation, marginal, marginal cost, marginal cost of production, marginal utility, marginal wood fern, parietal placentation, placentation, ventral placentation