Black Barrel Cactus with Pretty Flowers
Here’s another one with 2 flowers, and they’re non-standard color.
These are a variable species. Some are spiny, others quite spineless. The body color can be almost completely black, to a deep green color. You can see the flower color variation, but it can get even whiter than these. In habitat, they’re mostly underground, so very difficult to find unless they’re in bloom.
They rarely offset, so they’re grown from seeds. Moderately easy to grow indoors in a sunny window.