Singh, Rajeev Kumar. “Columnea Karstenianum R.Kr.Singh, a New Name of C. Picta H.Karst. (Gesneriaceae)”. Phytotaxa 606, no. 2 (July 28, 2023): 169–169. Accessed February 5, 2026. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.606.2.8.