Discocactus (Pfeiffer 1837) Etymology: From the Latin discus (disc), referring to the shape of the plant.Place of Origin: Bolivia, Paraguay, and Brazil, central and eastern.
Echinopsis (Zucc. 1837) A genus extremely variable in size and shape, ranging from large columnar species to small globular or clump-forming plants. Although all possess ribs, these vary greatly in number, from six to several dozen. They are typically very spiny plants, with areoles located on the crest of the ribs. They exhibit interesting flowering, which generally emerges on the sides of the stem or near the apex. The fruits are usually edible. Etymology: From the Greek echinos (hedgehog) and opsis (appearance), referring to its spiny appearance.Place of Origin: South America: Argentina, Bolivia, Brazil, Paraguay, Uruguay, and Chile.
Rebutia (K.Schum. 1895) Small globular-shaped plants with highly varied appearances. They produce abundant blooms and are generally very easy to cultivate. A highly suitable choice for beginners or those who appreciate a rewarding plant. Etymology: In honor of Pierre Rebut, a 19th-century cactus scholar and merchant.Place of Origin: Bolivia and Argentina