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12 351731 Discocactus heptacanthus (Barb. Rodr.) Britton & Rose [80 369128 Echinocactus hartmannii Schumann]
K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 2 : t. 69 (1905) [Toni Gürke]
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