At some point in its history, the word "arboretum" was added to the preserve's name, as reflected in the current, highly faded sign out on Snowden Lane, and the current wikipedia page. Though Herrontown Woods certainly has a lot of trees, there's no evidence of any past effort to consciously create a tree collection.
Since being founded 10 years ago, FOHW has worked to bring back many native woody species marginalized by introduced diseases, heavy shade, or intense deer browse. Among these are the butternut, the American chestnut, serviceberry, hazelnut, azalea, and hearts a'bustin.
Though we've dropped the "arboretum" from the name of the preserve, it seemed like it would be fun to better understand and highlight the many kinds of trees found here.
Thanks to the initiative and organizational elan of FOHW volunteer Alastair Binnie, we have thus far tagged and catalogued 266 trees and large shrubs, comprising 65 species. 
Helping out is Princeton High School graduate Jack Durbin, who is spending some of his gap year volunteering at Herrontown Woods. Jack has been helping in many other ways as well, including building and installing plant cages, cutting invasive species, and improving the trailhead at Princeton Community Village.
We've documented trees along all the trails at this point, with Jack doing the tagging, Alastair recording, while I add locations on a map created some years back by Alison Carver.
Along the way we've been tempted to include in the inventory a few specimens of ash tree, now nearly all lost to the hidden ravages of the emerald ash borer. Here's one's beautiful deeply furrowed bark.
One of our goals with the inventory is to create a self-guided Tour of Trees that people can take when they visit Herrontown Woods.
