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C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 1 : p. 244, t. 22A (1886) [42]
Illustration contributed by:
Missouri Botanical Garden, St. Louis, U.S.A.

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C.F. Förster, T. Rümpler, Handb. Cacteenk., ed. 2, vol. 1 : p. 244, t. 22A (1886)