Smith, G.F. and Crouch, N.R. 2024. Kalanchoe steyniae (Crassulaceae subfam. Kalanchooideae; K. [subg. Kalanchoe sect. Raveta] ser. Rotundifoliae), a new, small-growing, shrubby species from eastern southern Africa. Phytotaxa. 659, 3 (Jul. 2024), 268–276. DOI:https://doi.org/10.11646/phytotaxa.659.3.4.