Research Professor Emerita in the Department of Wildland Resources at Utah State University. She was curator of the Intermountain Herbarium for the first 20 years of her professional career where she worked to build the collection and explore remote areas of Utah. As Research Professor in the College of Natural Resources, she has worked on a number of large-scale interdisciplinary projects to document biodiversity in Utah. She is considered an authority on the taxonomy of sagebrush (Artemisia) and geography of the Utah flora. She currently serves on the Flora of North America executive committee.