Fig. 3. General anatomy (left) and starch localization (right) in developing cotyledons of Borszczowia aralocaspica. (A, B) Cotyledon, 0 d: (A) general view; (B) PAS staining for polysaccharides. Starch grains are present in hypodermal, chlorenchyma and water storage tissues. (C, D) Cotyledon, 8 d, dark: (C) general anatomy; (D) PAS. Starch is absent. (E, F) Cotyledon, 8 d, light: (E) general view; (F) PAS. Starch has accumulated mostly in proximal part of chlorenchyma cells and in water storage tissue. (G, H) Mature cotyledon: (G) cross‐section of cotyledon showing one layer of chlorenchyma cells with polarization of cytoplasm towards their proximal ends; (H) PAS for carbohydrates. Starch is accumulated abundantly in the proximal part of chlorenchyma cells with some grains in distal part, hypodermal and water storage cells. Scale bars = 20 µm. Ch, chlorenchyma cells; E, epidermis; H, hypodermis; VB, vascular bundle; WS, water storage tissue.