Figure 7. Fossil and extant Gnetales. 1. CUT-Z-GDB. TLM view showing five stomatal complexes (SL5298, scale-bar = 50 µm); 2. CUT-Z-GDB. TLM detail of a single stomatal complex. Note the much thinner cuticle over the guard cells (SL5298, scale-bar = 20 µm); 3. Extant Gnetum gnemon (AQ142124, scale-bar = 20 µm); 4. G. microcarpum (AQ142225, scale-bar = 20 µm).