Crouch, N. R., Walters, M., Lötter, M. and Smith, G. F. (2025) “A new cliff-dwelling species of Crassula (Crassulaceae: Crassuloideae) from the Mpumalanga Escarpment, Northern Drakensberg, South Africa”, Phytotaxa. Auckland, New Zealand, 714(1), pp. 69–78. doi: 10.11646/phytotaxa.714.1.4.