Origin and Habitat: Unknown (Perhaps it is a nursery produced cultivar)

• Lophophora williamsii var. jourdaniana (Haberm.) hort.
• Anhalonium jourdanianum Lewin
• Echinocactus jourdanianus Rebut ex C.A.Maass
• Lophophora jourdaniana Haberm.

• Lophophora williamsii (Lem. ex Salm-Dyck) J.M.Coult.
• Anhalonium visnagra K.Schum.
• Anhalonium williamsii (Salm-Dyck) Rümpler
• Anhalonium williamsii Lem. ex Förster
• Ariocarpus williamsii (Salm-Dyck) Voss
• Echinocactus lewinii (Henn. ex Lewin) K.Schum. in Engl. & Prantl
• Echinocactus williamsii Lem. ex Salm-Dyck
• Echinocactus williamsii var. anhaloninicus K.Schum.
• Echinocactus williamsii var. pellotinicus (K.Schum.) Rouhier
• Mammillaria williamsii (Lem.) J.M.Coult.
• Lophophora williamsii var. echinata (Croizat) Bravo
• Lophophora echinata Croizat
• Lophophora williamsii var. fricii f. cristata hort.
• Lophophora fricii f. cristata hort.
• Lophophora williamsii var. fricii f. variegata hort.
• Lophophora fricii f. variegata hort.
• Lophophora williamsii subs. grymi Halda, J.Kupčák & Sladk.
• Lophophora williamsii var. heptagona Y.Itô
• Lophophora williamsii var. jourdaniana (Haberm.) hort.
• Anhalonium jourdanianum Lewin
• Echinocactus jourdanianus Rebut ex C.A.Maass
• Lophophora jourdaniana Haberm.
• Lophophora williamsii var. lewinii (Henn. ex Lewin) J.M.Coult.
• Anhalonium lewinii Henn. ex Lewin
• Lophophora lewinii (Henn.) Rusby
• Mammillaria lewinii (Henn. ex Lewin) H.Karst.
• Lophophora williamsii var. pentagona Croizat
• Lophophora pentagona (Croizat) V.Gapon
• Lophophora williamsii var. pluricostata Croizat
• Lophophora pluricostata (Croizat) V.Gapon
• Lophophora williamsii var. texana Frič ex Kreuz.
• Lophophora lutea var. texana (Frič ex Kreuz.) Backeb.
• Lophophora williamsii var. typica Croizat
• Lophophora echinata var. typica

• Lophophora williamsii var. fricii (Haberm.) Grym
• Anhalonium floro rosea Frič
• Lophophora diffusa subs. fricii (Haberm.) Halda
• Lophophora fricii Haberm.
• Peyotl zacatensis (Haberm.) Sotom., Arred. & Mart.Mend.
• Peyotl zacatensis var. fricii (Haberm.) Sotom., Arred. & Mart.Mend.
• Lophophora fricii var. decipiens (Croizat) P.Hansen
• Lophophora williamsii var. decipiens Croizat

• Lophophora williamsii var. fricii cv. Marbles
• Lophophora fricii cv. Big Tubercles
• Lophophora fricii cv. Habermann
• Lophophora fricii cv. Marbles
• Lophophora williamsii cv. Kikko
• Lophophora cv. Kikko

Description: Lophophora jourdanianaSN|1774]]SN|1774]] is a clumping flattened cactus. Slowly forms small clumps up to 15cm in diameter.
Stem: Glaucous green (but more darker green than L. williamsii) are up to 4 cm tall, 5 cm in diameter, with a woolly top.
Ribs: 5 to 9 (or more).
Areoles: With some bunches of greyish hairs, up to 1 cm long.
Spines: Small short, thin and long persisting on young areoles.
Flowers: 2,5-3,5 cm in diameter that emerge from the mass of hairs in the center of the plant. Perianth, pistil, and filaments rose-violet; The stamens are thigmotropic.

Notes: Some people suppose Lophophora jourdanianaSN|1752]]SN|1774]] may perhaps be an hybrid between Lophophora williamsiiSN|1749]]SN|1117]] and Lophophora friciiSN|1117]]SN|1752]].
Furthermore L. jourdaniana is called Lophophora williamsiiSN|1774]]SN|1117]] var. jourdaniana by some other people. These same people labels Lophophora friciiSN|1117]]SN|1752]] as Lophophora williamsiiSN|1752]]SN|1117]] var. fricii. This is incorrect because Lophophora friciiSN|1117]]SN|1752]] is not a variation of Lophophora williamsiiSN|1752]]SN|1117]], and also the breading of the two different species seems impossible, in fact the flowers are frequently cleistogame. It is not possible to fertilize Lophophora jourdanianaSN|1117]]SN|1774]] with the pollen of Lophophora williamsiiSN|1752]]SN|1117]], nor with the pollen of Lophophora diffusaSN|1117]]SN|1749]] and Lophophora friciiSN|1774]]SN|1752]]. Some websites say this species contain some mescaline, but at a much lower content than williamsii, some other say it don't contain the alkaloid at all, because this plant is more related to diffusa than williamsii.

Cultivation and Propagation: Slow growing. Because of the tap root they are very rot prone, so use highly gritty compost with much drainage. Requires half shade to part sun. Watering: waterings should be rather infrequent to keep the plant compact and not to become excessively elongated and unnatural in appearance, watering it properly is often difficult because this plant tends to crack open or rot if over-watered. The fact that the plant retracts into the soil and assume a grey-green colouring between watering, is perfectly natural and doesn’t cause any damage. Overwintering: Keep completely dry and cool in winter (An unheated greenhouse would be perfect) or when night temperatures remain below 10° C, it can survive low temperatures (appr. -7°C) for a short period. Assure a good ventilation.
Propagation: Easy to propagate from cuttings or grafting.