Fig. 2

Seed of Adansonia digitata. a SEM-picture of the firm testa with a thickness of 700 µm, E endosperm, Em embryo, SC seed coat; (b) and (c) tomography in lateral view: (b) dry untreated seed; (c) seed after immersion in water at 100 °C. Due to the swelling cavities disappear and seed coat cracks open on the inside of the reniform seed