All of the Hornbeam family have characteristics that make them very good for bonsai.
Happy living in pots and a response to pruning that results nicely ramifying branching. Leaf size is generally quite small and reduces further with time under a bonsai regime. A number of the Oriental species are pretty much classic subjects in the bonsai world but the native European species are certainly being seen more often as well developed bonsai now.
This is a simple example that is nevertheless developing nicely. It will have been created from wild collected material and has already undergone several years growing to produce the reasonable branch structure that can be seen in the photos. The bonsai is 37cm. in height with a branch spread of 48cm. Across the base the trunk diam. is 4.5cm. Whilst leaf size is still relatively large this can be reduced with regular pruning and will happen automatically as branch development proceeds, more twigs means more leaves means smaller leaves, that’s how it works. It is planted in a rectangular plastic bonsai trainer 29x21x8cm