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Smith, G.F., Laguna, E., Verloove, F. and Ferrer-Gallego, P. 2020.

Aptenia ×vascosilvae (A. cordifolia × A. haeckeliana) (Aizoaceae), the new nothospecies from which the horticulturally popular cultivar Aptenia ‘Red Apple’ was derived

. Phytotaxa. 441, 2 (May 2020), 221–224. DOI:https://doi.org/10.11646/phytotaxa.441.2.10.