There are many images of phylogenetic trees on the internet, suitable for use when an icon or symbol is required. However, there are very few for phylogenetic networks. So, this is my second contribution to the genre. (My first one was the Favicon used in the URL address for this blog.) The road sign is based on one developed for trees by Colin Purrington, which is widely available on the internet.
Note: There is a later post with some more images: Network poster images.