The following was a guest post from Ignasi Bartomeus, originally posted on his blog on 26 Nov, 2012. Check out a related blog post here. Note the functionality discussed in this post is now in our taxize package under the function gisd_isinvasive. We hacked out a quick Shiny app so you can play around with the below function in taxize on the web to get invasive status and plot it on a phylogeny. Check it out here.