Sorbus ulleungensis - Savill Garden - Windsor Great Park, England - DSC06348.jpg
Sorbus ulleungensis - Savill Garden - Windsor Great Park, England - DSC06344.jpg
Sorbus ulleungensis, a New Endemic Species on Ulleung Island, Korea
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
Open Tree of Life reference taxonomy version 3.2