I bought 20 seeds of Astrophytum red flower asterias and sowed on 06/08/2007. I grafted 10 young seedlings. I found ture red flower was just 2 plants.
The photo is one of two true red flower asterias. Since stigma color is also red, I think this cacti has true red flower gene. The problem of red flower asterias is small body size. I assume mixing was repeated offten in history.
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