Figure 3. Welwitschia mirabilis. A, male cone; B, diagram of male reproductive unit; C, male reproductive unit in anterior view, subtending bract removed; D, sterile ovule; E, microsporangiophores and exserted micropylar tube; F, Pollen grains. Abbreviations: b, subtending bract; i, inner bracteole; n, nucellus; o, outer bracteole; s, fused sporangia; sp, sporangiophore bases; t, micropylar tube. (A, C, D, E, F, W.Giess 9158, PRE). Scale bars represent 5 mm (A), 0,5 mm (C, D, E) or 25 µm (F). Drawn by M.Steyn.