Aquilegia coerulea (Ranunculaceae) Colorado columbine (Photo by Tom Ranker) Herbarium COLO is the Botany Section of the University of Colorado Museum of Natural History on the Boulder campus. The Herbarium is available to anyone with an interest in botany. Users consist of faculty and students, visiting scholars, private consultants, local naturalists, and botanists from a variety of public and private agencies. An active center of Colorado botany, the Herbarium and the other sections of the University of Colorado Museum serve as the primary resources for the documentation and study of the rich natural history and biodiversity of Colorado. The University of Colorado Museum Herbarium is located in the basement of the Clare Small Building on the campus of the University of Colorado at Boulder (map). During the academic year, the Herbarium is open Monday through Thursday, 9 a.m. - 4 p.m., and Friday, 9 a.m. - 3 p.m. There are abbreviated hours during the summer (Tuesday through Thursday, 9 a.m. - 4 p.m.). Visitors are encouraged to call a Collection Manager in advance (303-492-3216) to arrange a date and time for their visit. You can also reach the Herbarium staff via email at herbcolo@colorado.edu. Tours of the Herbarium can be organized for groups such as classes from the University of Colorado and other institutions; these tours must be scheduled in advance.