Origin and Habitat: Serra do Barrao, near Grao Mogol in Minas Gerais, Brazil.
Altitude range: 1000 metres above sea level.

• Discocactus woutersianus Bredero & M.van de Broek

• Discocactus horstii Buining & Bredero
• Discocactus horstii f. cristatus hort.
• Discocactus horstii f. variegatus hort.
• Discocactus woutersianus Bredero & M.van de Broek

Description: Discocactus woutersianusSN|1463]]SN|21885]] is a rare species distinguished from Discocactus horstiiSN|21884]]SN|21884]] by its fewer and broader ribs and slightly heavier spines. It's still not clear whether this plant is a natural hybrid with Discocactus insignisSN|21885]]SN|1463]]. D. insignis occurs in the same habitat.
Stems: About 9 cm broad and up to 6 cm tall (without cephalium), grey-green.
Ribs: About 15.
Areoles: Round, about 15 per ribs on plants with cephalium.
Radial spines: 7, straight, white to grey, 2 to 5 mm long.
Cephalium: Cream.

Bibliography: Major references and further lectures
1) Günter Königs “Discocactus woutersianus AB1006” http://www.discocactus.nl/Engels/speciesE/woutersianusE.htm
2) Sukkulenta 1980 page 198-203
3) Sukkulenta 1981 page 14-15
4) Sukkulenta 1981 page 36-39

Cultivation and Propagation: It is rather difficult to grow and frost tender, should be kept at above 15° C if grown on its own roots (8°C if grafted) need full sun or afternoon shade. Young seedlings are generally grafted because they are slow growing and very rot prone when kept on their own roots and though they can’t endure long stretches of total dryness, too much water will rot them, as their weak root systems tend to be inefficient at sucking up water from wet soil. They generally resent being repotted and can take a long time to establish.
Propagation: Seed or grafting.