Taxonomy from V. scariosa var. crassa Thwaites. [details]
Compositae Working Group (CWG) (2021). Global Compositae Database. Vernonia ceylanica var. crassa (Thwaites) Balakr.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1237602 on 2025-04-02