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Shtein, R., Smith, G.F. and 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 (Nov. 2021), 235–260. DOI:https://doi.org/10.11646/phytotaxa.524.4.2.