Shtein, R., Smith, G. F., & Ikeda, J. (2021).

Aspects of the taxonomy of the Kalanchoe daigremontiana species complex (Crassulaceae subfam. Kalanchooideae) and associated interspecific hybrids in southern Madagascar, with the description of a new nothospecies, K. ×descoingsii (=K. laetivirens × K. tubiflora)

. Phytotaxa, 524(4), 235–260. https://doi.org/10.11646/phytotaxa.524.4.2