Natural History: A spiny shrub endemic to India. Yellow flowers arise on prickly branches. Plant looks similar to the B. prionitis, but has much larger spines (Flowers of India, 2022).
WFO (2022): World Flora Online. Accessed on 18 Dec 2022. URL: http://worldfloraonline.org/taxon/wfo-0000560248.
Flowers of India (2022). Accessed on 18 Dec 2022. URL: http://www.flowersofindia.net/catalog/slides/Spiny%20Barleria.html.
Churi, P. and N. Kawthankar. 2023. Barleria cuspidata B.Heyne ex Nees – Spiny Barleria. In Kunte, K., S. Sondhi, and P. Roy (Chief Editors). Butterflies of India, v. 4.12. Published by the Indian Foundation for Butterflies. URL: https://www.ifoundbutterflies.org/barleria-cuspidata, accessed 2023/03/23.