Fig. 3. Sections of axillary meristems of W. nobilis that had commenced development into bud primordia beneath the stem surface. A, Transverse section of a meristem at Position 2 showing increase in meristem size but no vascular or leaf primordia development. Bar = 500 µm. B, Detail of a section close to that shown in A. Bar = 100 µm. C, Similar to A except a longitudinal section of a developing meristem at Position 3. Bar = 500 µm. D, Detail of C. Bar = 200 µm. E, Transverse section of a large meristem at Position 4. Note the development of a procambium (arrowed), a very wide apical ‘dome’ and the absence of leaf primordia. Bar = 500 µm. F, As per E but at Position 10. Note the very wide apical dome, the procambial cells (arrowed) and the somewhat distorted leaf primordia. Bar = 500 µm.