Photo taken Sheffield Botanical Gardens August 2004.
Pincushion Cactus. Grown for their rings of funnel shaped flowers that develop near crowns. Flowers, offsets and long slender to spherical seed pods grow between tubercles on a spiny, green stem with extended aeroles. Frost tender to 10C/50F. Requires full sun and very well drained soil with added grit. Keep completely dry in winter, otherwise plants rot easily. Propagate by seed in spring or summer.