Starr 040423-0127 Spermacoce assurgens.jpg
Purple-leaved buttonweed (Spermacoce remota) flowers closeup 1.jpg
The IUCN Red List of Threatened Species 2022.2
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
World Checklist of Selected Plant Families
Open Tree of Life reference taxonomy version 3.2
List of plant species in China (2022 Edition)
A dataset on catalogue of alien plants in China
The categorization and analysis on the geographic distribution patterns of Chinese alien invasive plants
A dataset on inventory and geographical distributions of higher plants in Guangdong, China