Anthropogenic vegetation responses to historic mining activities. The right side is a tailing pile's hummock with its own distinct community composition and levels of stress compared to the edges of this drainage. Photo by author, 2016. A site can be walked across and never recognized as one. A stand of culturally modified trees can be cleared before anyone reads what it was recording. A patch of vegetation holding the shape of an old field boundary can be mowed over and mist

Look closely at an old Montana cemetery and you'll find lilacs, irises, and gooseberry bushes that outlived the people who planted them by a century. This piece traces five overlapping histories behind that persistence, fur trade gardens, mission orchards, army posts, and immigrant tradition, then offers a register for judging which introduced plants are still likely to turn up at a historic site today. The opening piece in a new series from Harris Anthropological Research.