Ryding, A.J.Paton & Thulin (Hedge) 2004 - Ryding O, Paton A, Thulin M, Springate D (2003) Reconsideration of the Genus Puntia and a New Species of the Genus Endostemon (Lamiaceae). Kew Bulletin 58(4): 919-927. doi: 10.2307/4111205.
There is no corrections for Endostemon stenocaulis yet.