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Notocactus ottonis x Hamatocactus setispinus 5/13/21
My experiments with crossing Hamatocactus setispinus into any available other species continue. There is no apparent trace of H. setispinus in the appearance of this plant. I crossed this with another hit of H. setispinus. I'll see the effect, if pollination is successful, in a year or two. The pot is 2.5" (6 cm) on a side. (41/56)