Other Name Combinations: Hybanthus enneaspermus (POWO, 2023).
Note: A female Acraea terpsicore – Tawny Coster was recorded laying eggs on this plant by Sneha S. Kambli from Pondicherry, Pondicherry in Sept 2015, but the complete life cycle is yet to be recorded to confirm this plant as its larval host.
POWO (2023): Plants of the World Online. Accessed on 16 Jan 2022. URL: https://powo.science.kew.org/taxon/77221099-1.
Flowers of India (2023). Accessed on 16 Jan 2022. URL: http://www.flowersofindia.net/catalog/slides/Spade%20Flower.html.
Forster, P. I. 2021. Reinstatement of Pigea Ging., an earlier generic name for the spade flowers previously included in Afrohybanthus Flicker (Violaceae). Austrobaileya, 11(29) :26-33.
Kambli, S. S. and N. Kawthankar. 2023. Pigea enneasperma (L.) Flicker – Spade Flower. 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/pigea-enneasperma, accessed 2023/03/30.