Astrophytum myriostigma var. nudum is very similar to Astrophytum myriostigma, it only deviate from the well-known typical form for lacking or mostly lacking white flecks. The stem is spherical to shortly columnar with age, up to 3.3 feet tall and up to 4 inches in diameter. The number of ribs vary from 3 to 8 (usually 5). Flowers are up to 2 inches long, pale-yellow and bloom in spring or early summer. It take up to 6 years to bloom.
Like most cacti they're drought tolerant and need very little care and attention to grow well. Not enough sunlight and over-watering are common mistakes.
Plenty of sunshine will keep this cacti more than happy. In a glass room you may have to provide some shade during a hot summers day to prevent sunburn
Feed every 4 weeks with a Nitrogen-poor and Potassium & Phosphorus-rich fertilizer during summer
It is an excellent plant for garden rockery settings, desert type landscapes, patios and botanical gardens