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 (Feb. 2023), 293–300. DOI:https://doi.org/10.11646/phytotaxa.584.4.6.