The IUCN Red List of Threatened Species 2022.2
Taxonomy database of the U.S. National Center for Biotechnology Information
World Checklist of Selected Plant Families
Open Tree of Life reference taxonomy version 3.2
On the Macaronesian endemic woody spurge Euphorbia regis‐jubae Webb & Berthel. and eponyms honouring the Numidian King Juba II (48 BCE –23/24 CE)