Sonfist’s The Endangered Species of New England has been part of the Sculpture Park since 2013. Rosenblum’s Venusvine, created 1990, has been there since 1996. Both artworks reflect their artists’ deeply rooted work with trees. Both are metal renderings of natural forms. Both artworks have decisive locations in the park. They’ve held their ground while other artworks have moved around, left or entered in recent years.