Erect, succulent perennial herb mostly to about 0.5 m tall. Leaves simple, lanceolate, more or less flat, to about 12 cm long, 4 cm wide,margin with teeth alternating with plantlet-bearing spurs, lower surface mottled with purple. Flowers dusky violet; winter to spring.
B. manginii Raym.-Hamet &H. Perrier from Madagascar is occasionally grown; it has obovate leaves to about 3 cm long and 1 cm wide and bright red flowers.
Grown mostly for the unusual plantlets on the leaf edges.
Source: (2002). Crassulaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.