no HD illustration available (m2)
6 454291 Gasteria obliqua (Aiton) Duval [125 44331 Aloe maculata var. obliqua Aiton]
H.G.A. Engler, Pflanzenr., vol. 38(III. ii.): [Heft 33], (Liliaceae - Asphodeloideae - Aloineae): p. 143, fig. 47 J (1908)