The IUCN Red List of Threatened Species 2022.2
Global Biodiversity Information Facility
World Checklist of Selected Plant Families
Open Tree of Life reference taxonomy version 3.2
Sukkulenten-Lexikon. Einkeimblättrige Pflanzen (Monocotyledonen)
Illustrated Handbook of Succulent Plants: Monocotyledons
A dataset on catalogue of alien plants in China