Rounded to cylindrical, often with a somewhat conical top, 6-10 cm high, 2.5-3 cm in diameter. Tubercles up to 10 mm (0.4 in) long.
The flowers are 3 cm long and 2.5 cm across and, like the flowers of many other species of this group, are quite diverse in color: white, pale yellow or perhaps even olive green, or whitish with a darker pink stripe in the middle of the petals.