Origin and Habitat: Lumbreras and Juramento, Salta, Argentina

• Gymnocalycium lumbrerasense F.Ritter

• Gymnocalycium schickendantzii (F.A.C.Weber) Britton & Rose
• Echinocactus schickendantzii F.A.C.Weber
• Gymnocalycium antherostele F.Ritter
• Gymnocalycium lumbrerasense F.Ritter
• Gymnocalycium schickendantzii var. michoga (Frič) Backeb.
• Gymnocalycium michoga Frič ex Y.Itô
• Gymnocalycium schickendantzii var. pectinatum Neuhuber
• Gymnocalycium schickendantzii subs. periferalium Neuhuber
• Gymnocalycium schickendantzii var. pungens (Frič) hort.
• Gymnocalycium pungens Z.Fleisch.

• Gymnocalycium schickendantzii subs. delaetii (K.Schum.) G.J.Charles
• Echinocactus delaetii K.Schum.
• Gymnocalycium delaetii (K.Schum.) Hosseus
• Gymnocalycium schickendantzii var. delaetii (K.Schum.) Backeb.
• Gymnocalycium delaetii f. antherosacos F.Ritter ex Neuhuber
• Gymnocalycium delaetii var. longispinum n.n., catalog name

Description: Up till now G. lumberasense is an undescribed plant collected by Ritter (FR962) that appear to be a form of Gymnocalycium schickendantziiSN|22430]]SN|22430]].

Cultivation and Propagation: Gymnocalyciums are very gratifying plants, their culture is easy and their flowering is abundant if we give them a well drained relatively rich substrate (if possible not limestone) Water regularly in summer (but do not overwater ) keep rather dry in winter, need frequent repottings and a very luminous exposure but avoid direct exposure to the sun rays. This species is particularly easy and accommodating, seldom suffer of cryptogamic diseases. Feed with a high potassium fertilizer in summer. Hardy as low as -5° C (or less) if kept dry.
Propagation: Direct sow after last frost or offsets. The grafting is useless (excluded the cultivars deprived of chlorophyll), it does not bring anything concrete