Smith, Gideon F., and Neil R. Crouch. 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). Auckland, New Zealand:268-76. https://doi.org/10.11646/phytotaxa.659.3.4.