TEM image of the young seed that is shown in Fig. 1C. (A) The seed coat (arrow indicates amyloplast). (B) Details of the young endothelium shown in (A) showing two endothelial cells on the left, adjacent to a perisperm cell on the right. The arrow indicates the endothelial cuticle. Abbreviations: Am, amyloplast in both cell layers; E, inner tangential wall of an epidermal cell; Et, endothelium; G, Golgi bodies; IP, inner parenchyma; LW, labyrinthine wall; N, nucleus; Ps, perisperm.