Atlas der baumarten von Java (Figur 431) BHL47163173.jpg
Flore des serres et des jardins de l'Europe (8594765975).jpg
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
Open Tree of Life reference taxonomy version 3.2
A dataset on catalogue of alien plants in China
North Carolina Extension Gardener Plant Toolbox