New Zealand Threat Classification System Database
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
United States Department of Agriculture Plants Database
Interim Register of Marine and Nonmarine Genera
Open Tree of Life reference taxonomy version 3.2
List of plant species in China (2022 Edition)
Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
Conservation status of New Zealand hornworts and liverworts, 2020