In 2010, the Trust for Public Land finalized the purchase of the Armstrong Bog which was described as a rare Calcareous fen wetland site in order to aid the "recovery of the federal threatened and state endangered bog turtle" (Glyptemys muhlenbergii), and preserve "plant habitat for the rare Fraser's Saint John's wort" (Triadenum fraseri). The bog is described as a wet meadow that features the pinkish-purple flowers of New York ironweed and Joe Pye weed in late summer and that "woodchucks have dug their dens on the gently sloping edge between the forest and the old corn field". A smaller parcel features streamside wetlands of arrowwood and elderberry which provides "habitat ideal for wood turtles and yellow-throated warblers". See also Black Dirt Region List of landforms in Sussex County, New Jersey List of place names of Native American origin in New Jersey List of rivers of New Jersey Notes References External links Wallkill River Watershed Management Group U.S. Geological Survey: NJ stream gaging stations Rivers of New Jersey Rivers of Sussex County, New Jersey Tributaries of the Wallkill River