Cactus number 2

Three weeks ago our cactus had only one bloom, I took a picture and posted it here.
Today I took  the time to have another look at the cactus and yes!, many additional blooms appeared. They sit like a ring around the trunk (or branch, what is it called for cacti??).
Perhaps in another three weeks it will be many rings of flowers. I am looking forward to see what it will be.