My Sulcorebutia arenacea has been blooming off and on for several weeks. The flowers only last a day (sometimes two), and are closed by evening, but today I finally remembered to take a picture when I was home for lunch.
They are so pretty, with their beautiful deep golden flowers. This species is native to the Cochabamba region of Bolivia on the dry slopes of the eastern Andes.
Even when it's not in flower, it's a beautiful plant. I love the flat spines.