Annotated Checklist of Vascular Flora: Natural Bridges National Monument

In 2006, the National Park Service (NPS) estab-lished a cooperative agreement with the Univer-sity of Wyoming, through the Rocky Mountains Cooperative Ecosystem Studies Unit, to produce a series of technical reports summarizing the vas-cular plant flora of each of the 16 national park units of the Northern Colorado Plateau Network (NCPN).