Habit of Euphorbia susannae (Becker & Moller 1157, UNIN). Photographer: A. Moller.
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Jankalski, S. (2005). Hybrids in succulent Euphorbia. Euphorbia World 1(1), 17-20.
van Veldhuisen, R. (2005). Euphorbia susannae Marloth. Euphorbia World 1(1), 13-16.