Around noon each day from late April to early October, the flowers on my G. baldianum open up wide and then close up for the evening, only to reopen the next day. The flowers last several days to a week, and then more buds are ready to take over. I've written about this cactus twice before, once to describe its perilous past, and then again to describe its amazing flowering capacity. Since this is the only cactus in my garden to have flowers this week, I thought it deserved another post.
The genus name, Gymnocalycium, is a combination of two Greek words: Gymnom, meaning naked or hairless, and Calyx, meaning goblet. The genus is so named because the flower buds do not have any little hairs or spines as some cacti present. As you can see from the photo below, the bud is velvety soft and smooth. This photo was taken in the morning, and this bud opened that same afternoon. Close up, I think the buds are quite beautiful.
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