Smith, G.F. and Figueiredo, E. 2023. Reinstatement of Aloe verdoorniae (Asphodelaceae subfam. Alooideae), a distinctively purplish blue-leaved species of maculate aloe endemic to the eastern Gauteng and western Mpumalanga provinces of South Africa. Phytotaxa. 626, 2 (Nov. 2023), 110–118. DOI:https://doi.org/10.11646/phytotaxa.626.2.4.