Xyris chapmanii, an Overlooked Xyris Species of the New Jersey Pine Barrens

Xyris chapmanii E. L. Bridges & Orzell has recently been discovered extant in the Pine Barren region of southern New Jersey. Information substantiating this find and a key differentiating other local Xyris species is provided. Additionally, a history of the species is provided along with a species description, floristic composition, habitat, associated species, current range, and current status. Further discussion highlights historical collections originally misidentified and deposited in herbaria but later correctly identified and annotated by James W. Horn in 2009. The biogeographic significance of X. chapmanii in New Jersey is also discussed.