Discocactus horstii

Discocacrçtus horstii; endèmico del suroeste de Brasil, Minas Geràis, distinguida cactàcea de flor blance de suave perfume, su floracion es nocturna.... (Endêmic plant from Minas Gerais Brazil, bloom at nigth, with very delicious and soft perfume; impossible to buy it in mexico, )