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406.0000 Family Cactaceae Juss.; Gen. Pl. [Jussieu] 310 (1789), nom. cons.
133 genera, ca. 1700-1800 spp. There has been excessive splitting, leading to over 3000 species in some collectors view. The phylogeny is still somewhat in flux, but is getting more stabilized now. It should be good practice in the future that each ´new species´ description is confirmed by molecular genetics, not only by morphology.
Species listed in database: 1798; hybrids: 78
= Cereaceae DC. & Spreng.(transl.Jameson); Elem. Philos. Pl. 142 (1821)
= Mammillariaceae D.L.Fu; Amer. J. Agric. Forest. 12(5): 352 (2024)
= Nopaleaceae E.Schmid & Curtman; Pflanzenr. 2: 135 (1856)
= Opuntiaceae Desv.; Dict. Rais. Bot. 52, 385 (1817)
406.5221 Genus Lophophora J.M.Coult.; Contr. U.S. Natl. Herb. 3: 131 (1894)
Distribution: SW-USA, N- and E-Mexico
Species listed in database: 3
= Peyotl F.Hern.; Hist. Pl. Nov. Hisp. 3: 70 (1790), contrary to Art. 42.1 ICBN (2000)
species :
Lophophora diffusa (Croizat) Bravo; Cact. Suc. Mex. 12: 13 (1967)
Distribution: Mexico (Hidalgo, Queretaro, San Luis Potosi)
79 MEX
Synonyms: hidden
= Lophophora alberto-vojtechii Bohata, Mysák & Snicer; Cactus & Co. 12(2): 108 (2008)
= Lophophora diffusa subsp. kubesae Halda, Kupcák & Malina; Acta Mus. Richnov., Sect. Nat. 9(1): 66 (2002)
= Lophophora diffusa subsp. viridescens Halda; Cactaceae etc. 7(2): 61 (1997), nom. nov.
= Lophophora diffusa var. koehresii Ríha; Kaktusy (Brno) 32(3): 70 (1996)
= Lophophora diffusa var. swobodaiana Halda, Kupcák & Malina; Acta Mus. Richnov., Sect. Nat. 9(1): 67 (2002)
= Lophophora echinata var. diffusa Croizat; Desert Pl. Life 16: 44 (1944)
= Lophophora koehresii (Ríha) Bohata, Mysák & Snicer; Kaktusy (Brno) special 2: 20 (2005)
= Lophophora viridescens (Halda) Halda; Acta Mus. Richnov., Sect. Nat. 4(2): 71 (1997)
= Lophophora williamsii subsp. diffusa (Croizat) Scheinvar; Fl. Cactológ. Est. Queretaro 212 (2004)
= Lophophora williamsii var. diffusa (Croizat) G.D.Rowley; Repert. Pl. Succ. 27: 7 (1976 publ. 1979)
= Lophophora williamsii var. koehresii (Ríha) Grym; Rod Lophophora 55 (1997)
= Peyotl diffusus (Croizat) Sotom., Arred. & Mart.Mend.; Cactus & Co. 5: 227 (2001), nom. inval.
= Peyotl viridescens (Halda) Sotom., Arred. & Mart.Mend.; Cactus & Co. 5: 227 (2001), nom. inval.
species :
Lophophora fricii Haberm.; Kaktusy (Brno) 1974: 123 (1974)
Distribution: Mexico (Coahuila)
79 MEX
Remarks: often treated as subspecies of L. diffusa
Synonyms: hidden
= Lophophora diffusa subsp. fricii (Haberm.) Halda; Cactaceae etc. 7: 61 (1997)
= Lophophora williamsii var. fricii (Haberm.) Grym; Rod Lophophora 56 (1997)
= Peyotl zacatensis var. fricii (Haberm.) Sotom., Arred. & Mart.Mend.; Cactus & Co. 5: 228 (2001), nom. inval.
species :
Lophophora williamsii (Lem. ex Salm-Dyck) J.M.Coult.; Contr. U.S. Natl. Herb. 3: 131 (1894)
Name: Peyote, Peyotl
Distribution: USA (SW-Texas); Mexico (Chihuahua, Coahuila, Durango, Jalisco, Nuevo Leon, San Luis Potosi, Tamaulipas, Zacatecas)
77 USA 79 MEX
Synonyms: hidden
= Anhalonium lewinii Henn.; Gartenflora 410-11, fig. 92 (1888), et Kew Bull. 77 (1889)
= Anhalonium williamsii (Lem. ex Salm-Dyck) C.F.Först.; Handb. Cacteenk., ed. 2 [Rümpler] 1: 233 (1885)
= Ariocarpus williamsii (Lem. ex Salm-Dyck) Voss; Vilm. Blumengärtn. ed. 3 [Siebert & Voss], 1: 368 (1895)
= Echinocactus lewinii (Henn.) K.Schum.; Monatsschr. Kakteenk. 5: 11 (1895)
= Echinocactus williamsianus Lem.; Herb. Gén. Amat., Sér. 2, 3(misc.): 43 (1843), nom. rej. prop.
= Echinocactus williamsii Lem. ex Salm-Dyck; Allg. Gartenzeitung [Otto & Dietrich] 13: 385 (1845)
= Echinocactus williamsii var. anhaloninicus K.Schum.; Bot. Jahrb. Syst. 24: 567 (1898)
= Echinocactus williamsii var. luteus Rouhier; Trav. Lab. Matière Méd. École Supér. Pharm. Paris 17: 62 (1927)
= Echinocactus williamsii var. pellotinicus K.Schum.; Bot. Jahrb. Syst. 24: 567 (1898)
= Lophophora echinata Croizat; Desert Pl. Life 16: 43 (1944)
= Lophophora echinata var. lutea (Rouhier) Croizat; Desert Pl. Life 16: 44 (1944)
= Lophophora jourdaniana Haberm.; Kaktusy (Brno) 11(1): 3 (1975)
= Lophophora lewinii (Henn.) Rusby; Bull. Pharm. (Detroit) 8: 306 (1894)
= Lophophora lewinii C.H.Thomps.; Rep. (Annual) Missouri Bot. Gard. 9: 133 (1898)
= Lophophora lutea (Rouhier) Backeb.; Cactaceae [Backeberg] 5: 2901 (1961)
= Lophophora lutea var. texana (Fric ex Kreuz.) Backeb.; Cactaceae [Backeberg] 5: 2903 (1961)
= Lophophora pentagona (Croizat) V.Gapon; Kaktus-Klub 2004(2): 49 (2004)
= Lophophora pluricostata (Croizat) V.Gapon; Kaktus-Klub 2004(2): 49 (2004)
= Lophophora williamsii subsp. grymi Halda, Kupcák & Sladk.; Acta Mus. Richnov., Sect. Nat. 7(1): 36 (2000)
= Lophophora williamsii var. cristata Houghton; J. Cact. Succ. Soc. Amer. 2: 490 (1931)
= Lophophora williamsii var. decipiens Croizat; Desert Pl. Life 16: 44 (1944)
= Lophophora williamsii var. echinata (Croizat) Bravo; Cact. Suc. Mex. 12: 12 (1967)
= Lophophora williamsii var. heptagona Y.Itô; Cactaceae [Itô] 467 (1981) (without type)
= Lophophora williamsii var. lewinii (Henn.) J.M.Coult.; Contr. U.S. Natl. Herb. 3: 131 (1894)
= Lophophora williamsii var. lutea (Rouhier) Soulaire; Cact. Mèd. 121 (1948)
= Lophophora williamsii var. pentagona Croizat; Desert Pl. Life 16: 44 (1944)
= Lophophora williamsii var. pluricostata Croizat; Desert Pl. Life 16: 8 (1944)
= Lophophora williamsii var. texana Fric ex Kreuz.; Verzeichnis Amer. Sukk. Rev. Syst. Kakteen 9 (1935)
= Mammillaria lewinii (Henn.) H.Karst.; Deut. Fl. [Karsten], ed. 2, 2: 457 (1895)
= Mammillaria williamsii (Lem. ex Salm-Dyck) J.M.Coult.; Contr. U.S. Natl. Herb. 2: 129 (1891)
= Peyotl xochimilcensis F.Hern.; Hist. Pl. Nov. Hisp. 3: 70 (1790), contrary to Art. 42.1 ICBN (2000)
= Peyotl zacatensis F.Hern.; Hist. Pl. Nov. Hisp. 3: 70 (1790), contrary to Art. 42.1 ICBN (2000)
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A complete, synonymic checklist of the Higher Plants of the World


Version 25.04 (April 17th, 2025)

Covering 356,375 accepted species,
8,782 hybrids, 48,090 accepted infraspecific taxa and 1,002,897 synonyms,
in total 1,416,144* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]


With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life