Smith, G.F. and Figueiredo, E. 2019.

Kalanchoe porphyrocalyx var. sambiranensis, a new variety in a Madagascan Kalanchoe (Crassulaceae subfam. Kalanchooideae)

 

. Phytotaxa. 422, 2 (Oct. 2019), 206–208. DOI:https://doi.org/10.11646/phytotaxa.422.2.8.