L-Systems for Unity (free script included)

I created startup point for L-Systems implementation for Unity. Here are first results, as well as free script, which allows to create these plants.
I also made possibility to create small forests of these randomly generated trees, however, as script is not very well optimised and as there are large amount of polys, current approach might be not very practical.
Suggestions, impressions and other things are welcome in this discussion.
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L-Systems for Unity (free script included)