Smith, G.F. & Figueiredo, E. (2020)

Aloe ×engelbrechtii (Asphodelaceae subfam. Alooideae), a new South African nothospecies with A. arborescens and A. hardyi as parents

. Phytotaxa 464 (3): 252–256. https://doi.org/10.11646/phytotaxa.464.3.8