Which is in the Cactaceae family, Phebalium or Ariocarpus?
Ariocarpus Ariocarpus is a genus of 8 species of succulent, subtropical plants of the Cactaceae family.
Parodia scopa Parodia scopa syn. "Notocactus scopa" (silver ball cactus) is a species of flowering plant in the cactus family Cactaceae, native to upland southern Brazil and Uruguay. It is a ball- or cylinder-shaped cactus growing to 5 - tall by 10 cm broad, with a spiny, woolly crown and pale yellow flowers in summer.