Klopper RR, Grace OM, Klopper AW, Smith GF, Wyk AEV. A taxonomic revision of Aloe sect. Purpurascentes (Asphodelaceae subfam. Alooideae). Phytotaxa [Internet]. 2023 Nov. 29 [cited 2025 Apr. 14];628(1):1-64. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.628.1.1