The hybrid between the two Malagasy species, Kalanchoe blossfeldiana and K. manginii (Crassulaceae subfam. Cotyledonoideae), was described as K. ×oberlanderi. This nothospecies has been the source of remarkably successful horticultural material, from which several cultivars that remain popular in cultivation globally have been derived. Some of these cultivars differ in subtle ways and are sometimes confused in the trade. In this paper such a cultivar, K. ×oberlanderi ‘Pink Flash’, is described and compared with material assigned to K. ×oberlanderi ‘Margrit’s Magic’ (or simply K. ‘Margrit’s Magic’) and to K. blossfeldiana ‘Maya’ (or simply K. ‘Maya’), with the latter likely also a selection from K. ×oberlanderi rather than from K. blossfeldiana only.
Gideon F. Smith (Thu,) studied this question.