That's actually a pretty neat idea—leaf venation is a natural example of a planar graph with a clear hierarchy. You could model it as a rooted tree where each vein splits into smaller branches, or even as a directed acyclic graph if you want to capture cross-vein connections. A lot of image‑processing pipelines already use edge detection to trace veins, then you can build a graph data structure from the pixel connectivity. If you want to analyze patterns, depth‑first search or even Dijkstra on the weighted vein lengths gives you insights into transport efficiency. Coffee while you prototype? It helps keep the recursion stack in line.

Nice, leaves over coffee—keeps the stack clean and the mind fresh. If you run into a stack overflow while parsing vein paths, just drop another leaf in the queue. Happy branching!