Project name: Trinational Monarch Knowledge Network
Dataset summary : The data are collection records of monarch butterflies (Danaus plexippus) and associated plant species in the western United States of America (mainly west of the Rocky Mountains). Attributes include collection date, altitude, location description and sex. The records were obtained from museum collections. The collections include Brigham Young University, California Academy of Sciences, Los Angeles County Museum of Natural History, The University of Utah, and Utah State University. Additional sources include collections and observations from John Hinchliff ’s Oregon Butterfly Atlas (via Oregon State University), Andrew Brower, Robert Pyle, Arthur Shapiro and Larry Speers.