Synonyms- Thelocactus ysabelae, Gymnocactus ysabelae, Pediocactus ysabelae,
Thelocactus ysabelae v brevispinus, Turbinicarpus ysabelae v brevispinus.
Body- Solitary globular depressed, 40-160mm high 70-200mm wide yellowish-green.
Tubercles- Conical well developed 3-8mm high.
Spines- Radials- 16-20 radiating, straight, whitish 2-10mm long.
Centrals- 1 curved upwards, greyish-white with darker tip 7-20mm long.
Flowers- White, 10-18mm long, generally 30mm wide but can be up to 70mm wide.
Fruits- Greenish-brown rounded .
Distribution- Found in the municipalities of Tula in the state of Tamaulipas (Mexico).
This species is easy to cultivate. Requires full sun and careful watering to keep plant compact and low.
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