Photo 1. Gymnocalycium mihanovichii v. friedrichii "Hibotan Nishiki" - "Whether the colour forms Gymnocalycium blossom?" (N 1/2) (Article on Russian)
Photo 2. Gymnocalycium mihanovichii - the same article.
Photo 3. Gymnocalycium hybr - "Derevyanko Vitaly Trofimovich, Krasnoyarsk, Russia" (N 3/4)
Photo 4. Gymnocalycium friedrichii v. pirarettaense - "Your opinion by N.Shemorakov (N 3/4)
Photo 5. Gymnocalycium mihanovichii var. friedrichii "Pottii" (Pink) - "The contents of photosynthetic pigments ..." I.Skoulkin E.Artemyeva (N 3/4)
Photo 6. Gymnocalycium mihanovichii var. friedrichii hybr (Rose) - the same article.
Photo 7. Gymnocalycium mihanovichii var. friedrichii hybr ("Hibotan") - the same article.