heterotypic synonyms:
Aloe pentagona Salm-Dyck; Apicra quinquangularis (Schult. & Schult.f.) Sweet;
protologue: Syst. Veg., ed. 15 bis (Roemer & Schultes) 7(1): 658 (1829)
5 44624 Aloe quinquangularis Schultes & Schultes f.J.M.F.A.H.I. Salm-Reifferscheidt-Dyck [Salm-Dyck], Aloes Mesembr., vol. 1 (Aloe): , fig. 1.4 (1849)