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406.0000 Family Cactaceae Juss.; Gen. Pl. [Jussieu] 310 (1789), nom. cons.
ca. 140-170 genera (circumscription still very much in flux), ca. 1700-1800 spp. Latest phylogeny: de Vos et al. (2025). There has been excessive splitting, leading to over 3000 species in some collectors view. 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: 1824; hybrids: 79
= 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; Pflanzenreich [Petermann] 2: 135 (1856)
= Opuntiaceae Desv.; Dict. Rais. Bot. 52, 385 (1817)
406.6458 Genus Pachycereus (A.Berger) Britton & Rose; Contr. U.S. Natl. Herb. 12: 420 (1909)
Distribution: Mexico
Species listed in database: 5
= Anisocereus Backeb.; Blätt. Kakteenf. 1938(6): (8, 21) (1938)
species :
Pachycereus grandis Rose; Contr. U.S. Natl. Herb. 12: 421 (1909)
Distribution: Mexico (Mexico State, Michoacan, Morelos, Oaxaca, Puebla)
79 MEX
Synonyms: hidden
= Cereus bergerianus Vaupel; Monatsschr. Kakteenk. 23: 24, 82 (1913)
species :
Pachycereus pecten-aboriginum (Engelm. ex S.Watson) Britton & Rose; Contr. U.S. Natl. Herb. 12: 422 (1909)
Name: Aborigine´s Comb, Chik, Etcho, Hairbrush Cactus, Hecho, Indian´s Comb
Distribution: Mexico (Baja California Sur, Chihuahua, Colima, Durango, Guerrero, Jalisco, Mexico State, Michoacan, Nayarit, Oaxaca, Puebla, Sinaloa, Sonora, Zacatecas)
79 MEX
Synonyms: hidden
= Cereus pecten-aboriginum Engelm. ex S.Watson; Proc. Amer. Acad. Arts 21: 429 (1886)
= Pachycereus pecten-aboriginum subsp. tehuantepecanus (T.MacDoug. & Bravo) P.V.Heath; Calyx 2(3): 107 (1992)
= Pachycereus tehuantepecanus T.MacDoug. & Bravo; Cact. Suc. Mex. 1: 64 (1956)
species :
Pachycereus pringlei (S.Watson) Britton & Rose; Contr. U.S. Natl. Herb. 12: 422 (1909)
Name: Cardon, Cardon Gigante, Cardon Pelon, Sagueso, Sahuaso
Distribution: Mexico (Baja California Norte, Baja California Sur, Durango, Sonora)
79 MEX
Synonyms: hidden
= Cereus calvus Engelm. ex J.M.Coult.; Contr. U.S. Natl. Herb. 3: 409 (1896)
= Cereus pringlei S.Watson; Proc. Amer. Acad. Arts 20: 368 (1885)
= Cereus pringlei var. calvus M.E.Jones; Contr. W. Bot. 18: 60 (1933)
= Cereus titan Engelm. ex J.M.Coult.; Contr. U.S. Natl. Herb. 3: 409 (1896)
= Pachycereus calvus (Engelm. ex J.M.Coult.) Britton & Rose; Contr. U.S. Natl. Herb. 12: 420 (1909)
= Pachycereus pringlei f. calvus (Engelm. ex J.M.Coult.) P.V.Heath; Calyx 2: 107 (1992)
= Pachycereus pringlei f. constrictus P.V.Heath; Calyx 2(3): 107 (1992)
= Pachycereus pringlei f. cristatus P.V.Heath; Calyx 2(3): 107 (1992)
= Pachycereus pringlei f. gibbosus P.V.Heath; Calyx 2(3): 107 (1992)
= Pachycereus titan (Engelm. ex J.M.Coult.) Britton & Rose; Contr. U.S. Natl. Herb. 12: 422 (1909)
= Pilocereus pringlei (S.Watson) F.A.C.Weber; Dict. Hort. [Bois] 966 (1898)
species :
Pachycereus tepamo Gama & S.Arias; Novon 8(4): 359 (1998)
Distribution: Mexico (Guerrero, Michoacan)
79 MEX
species :
Pachycereus weberi (J.M.Coult.) Backeb.; Cactaceae [Backeberg] 4: 2152 (1960)
Name: Candelabro, Cardon, Chico
Distribution: Mexico (Guerrero, Hidalgo, Mexico State, Michoacan, Morelos, Oaxaca, Puebla, Queretaro, Veracruz)
79 MEX
Synonyms: hidden
= Cereus candelabrum K.Schum.; Gesamtbeschr. Kakt. 106 (1897), nom. superfl.
= Cereus weberi J.M.Coult.; Contr. U.S. Natl. Herb. 3: 410 (1896)
= Lemaireocereus weberi (J.M.Coult.) Britton & Rose; Contr. U.S. Natl. Herb. 12: 426 (1909)
= Pachycereus gigas (Backeb.) Backeb.; Cactaceae [Backeberg] 4: 2154 (1960)
= Pachycereus grandis var. gigas Backeb.; Beitr. Sukkulentenk. Sukkulentenpflege 1941: 2 (1941)
= Pachycereus weberi var. gigas (Backeb.) P.V.Heath; Calyx 2(3): 107 (1992)
= Ritterocereus weberi (J.M.Coult.) Backeb.; Cact. Succ. J. (Los Angeles) 23: 121 (1951)
= Stenocereus weberi (J.M.Coult.) Buxb.; Bot. Stud. 12 (Entwickl. Trib. Pachycereae): 101 (1961)
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A complete, synonymic checklist of the Higher Plants of the World

Version 25.11 (Nov. 11th, 2025)

Covering 357,753 accepted species,
8,806 hybrids, 48,075 accepted infraspecific taxa and 1,004,944 synonyms,
in total 1,419,578* 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