Multiple Surface to Fluid Surface

Hi, I have an object, which is made up of segmented surfaces created using an L-System branching code. I need to join these surfaces into one seamless, fluid surface in order to create a seamless structural system for this object. I can't find any way to do this in Rhino or Grasshopper, so any suggestion will be really helpful! The best way I can think to describe what I'm looking for is like applying clay to a human sculpting model, just using this original branching structure to create a final fluid form. Any help is much appreciated! I have included the rhino model and grasshopper file with the object.