Hello, plant experts! I recently went on a trip to Branchland, Lincoln County, West Virginia to visit Grandma and celebrate her 87th birthday. While I'm there, I always visit a lot of cemeteries to continue my genealogy work. Dad and I were on a path walking from one cemetery to another when I saw a Tiger Swallowtail. They're super common in WV because Tulip Poplar is a host plant and that stuff grows everywhere. But what got me curious was the shrub or small tree it was nectaring on. Anytime a butterfly is that interested in something, I need to know what it is! Thanks in advance!