Previous dataset version: The Oregon State University Herbarium (OSC) houses approximately 700,000 vascular plant, bryophyte, algal, and fungal specimens. The collections are worldwide in scope, with a focus on the state of Oregon and the Pacific Northwest of the United States and Canada. Our vascular plant collection also includes the ORE and WILLU herbaria, and specimens should be cited based on the original herbarium. Square brackets indicate interpreted information not on the original label.