Smith, G.F. (2023)

Kalanchoe ×sampsonii [K. ×hankeyi × K. sexangularis] (Crassulaceae subfam. Kalanchooideae), a horticulturally successful nothospecies from South Africa with enhanced vegetative and reproductive characters

. Phytotaxa 584 (4): 293–300. https://doi.org/10.11646/phytotaxa.584.4.6