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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)
406.5214 Genus Pediocactus Britton & Rose; Ill. Fl. N. U.S. [Britton & Brown], ed. 2, 2: 569 (1913)
Distribution: W-USA
Species listed in database: 8
= Navajoa Croizat; Cact. Succ. J. (Los Angeles) 15: 89 (1943)
= Neonavajoa Doweld; Sukkulenty (Moscow) 1999(2): 43 (1999), nom. nov. for Navajoa Croizat
= Pilocanthus B.W.Benson & Backeb.; Kakteen And. Sukk. 8: 187 (1957)
= Utahia Britton & Rose; Cactaceae [Britton & Rose] 3: 215 (1922)
= Puebloa Doweld; Sukkulenty (Moscow) 1999(1): 20 (1999)
species :
Pediocactus bradyi L.D.Benson; Cact. Succ. J. (Los Angeles) 34: 19 (1962)
subspecies :
subsp. bradyi
Distribution: USA (N-Arizona: Marble Canyon)
76 USA
Synonyms: hidden
= Pediocactus simpsonii subsp. bradyi (L.D.Benson) Halda; Acta Mus. Richnov., Sect. Nat. 5(1): 13 (1998)
= Puebloa bradyi (L.D.Benson) Doweld; Sukkulenty (Moscow) 1999(1): 22 (1999)
= Toumeya bradyi (L.D.Benson) Earle; Cacti Southw. 97 (1963)
subspecies :
subsp. despainii (S.L.Welsh & Goodrich) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 64 (1995)
Distribution: USA (Utah: Emery Co.)
76 USA
Synonyms: hidden
= Pediocactus bradyi var. despainii (S.L.Welsh & Goodrich) Hochstätter; Succulenta (Netherlands) 73(2): 57 (1994)
= Pediocactus despainii S.L.Welsh & Goodrich; Great Basin Naturalist 40: 83 (1980)
= Pediocactus simpsonii var. despainii (S.L.Welsh & Goodrich) Halda; Acta Mus. Richnov., Sect. Nat. 5(1): 14 (1998)
= Pediocactus winkleri subsp. despainii (S.L.Welsh & Goodrich) Janeba; Kaktusy (Brno) 59(2): 41 (2023)
= Puebloa bradyi var. despainii (S.L.Welsh & Goodrich) Doweld; Sukkulenty (Moscow) 1999(1): 22 (1999)
subspecies :
subsp. winkleri (K.D.Heil) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 61 (1995)
Name: Winkler´s Cactus, Winkler´s Pincushion Cactus
Distribution: USA (Utah: Wayne Co.)
76 USA
Synonyms: hidden
= Pediocactus bradyi var. winkleri (K.D.Heil) Hochstätter; Succulenta (Netherlands) 73(2): 55 (1994)
= Pediocactus simpsonii var. winkleri (K.D.Heil) Halda; Acta Mus. Richnov., Sect. Nat. 5(1): 14 (1998)
= Pediocactus winkleri K.D.Heil; Cact. Succ. J. (Los Angeles) 51(1): 28 (1979)
= Puebloa bradyi subsp. winkleri (K.D.Heil) Doweld; Sukkulenty (Moscow) 1999(1): 22 (1999)
species :
Pediocactus hajekii Hochstätter; Cact.-Advent. Int. (Almeria) 35(122): 132 (2023)
Distribution: USA (Oregon)
73 USA
Remarks: provisionally accepted name
species :
Pediocactus knowltonii L.D.Benson; Cact. Succ. J. (Los Angeles) 32: 193 (1960)
Name: Knowlton´s Cactus, Knowlton´s Pincushion Cactus, Thimble Plains Cactus
Distribution: USA (New Mexico: Los Pinos River)
77 USA
Conservation Status: very rare, only 1 site known
Synonyms: hidden
= Pediocactus bradyi var. knowltonii (L.D.Benson) Backeb.; Descr. Cact. Nov. [Backeberg] 3: 12 (1963)
= Pediocactus simpsonii var. knowltonii (L.D.Benson) Halda; Acta Mus. Richnov., Sect. Nat. 5(l): 13 (1998)
species :
Pediocactus nigrispinus (Hochstätter) Hochstätter; Succulenta (Netherlands) 71(3): 99 (1992)
Distribution: USA (Idaho, Oregon, Washington)
73 USA
Synonyms: hidden
= Pediocactus nigrispinus subsp. beastonii (Hochstätter) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 29 (1995)
= Pediocactus nigrispinus subsp. puebloensis Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 152 (1995)
= Pediocactus nigrispinus var. beastonii Hochstätter; Succulenta (Netherlands) 71(3): 103 (1992)
= Pediocactus simpsonii var. nigrispinus Hochstätter; Succulenta (Netherlands) 69(9): 178 (1990)
species :
Pediocactus paradinei B.W.Benson; Cact. Succ. J. (Los Angeles) 29: 136 (1957)
Distribution: USA (N-Arizona)
76 USA
Synonyms: hidden
= Pilocanthus paradinei (B.W.Benson) B.W.Benson & Backeb.; Kakteen And. Sukk. 8: 188 (1957)
= Pediocactus simpsonii var. paradinei (B.W.Benson) Halda; Acta Mus. Richnov., Sect. Nat. 5(1): 13 (1998)
species :
Pediocactus peeblesianus (Croizat) L.D.Benson; Cact. Succ. J. (Los Angeles) 34: 58 (1962)
subspecies :
subsp. peeblesianus
Name: Fickeisen´s Hedgehog Cactus, Navajo Cactus, Peeble´s Cactus, Peeble´s Hedgehog Cactus, Peeble´s Navajo Cactus
Distribution: USA (N-Arizona)
76 USA
Synonyms: hidden
= Echinocactus peeblesianus (Croizat) L.D.Benson; Cacti Ariz., ed. 2, 108 (1950)
= Navajoa durispina Y.Itô; Cactaceae [Itô] 473 (1981), without type
= Navajoa peeblesiana Croizat; Cact. Succ. J. (Los Angeles) 15: 89 (1943)
= Navajoa peeblesiana f. maia Hochstätter; Cactaceae Rev. 2(2): 11 (1999)
= Navajoa peeblesiana f. menzelii Hochstätter; Cactaceae Rev. 2(2): 10-11 (1999)
= Navajoa peeblesiana subsp. menzelii (Hochstätter) Hochstätter; Gen. Pediocactus Navajoa Toumeya 44 (2007)
= Neonavajoa peeblesiana (Croizat) Doweld; Sukkulenty (Moscow) 1999(2): 43 (1999)
= Pediocactus peeblesianus f. maius (Hochstätter) Hájek; Kaktusy (Brno) 36(3): 73 (2000)
= Pediocactus peeblesianus f. menzelii (Hochstätter) Hájek; Kaktusy (Brno) 36(3): 73 (2000)
= Pediocactus peeblesianus var. maianus L.D.Benson; Cacti Ariz., ed. 3: 24 (1969)
= Toumeya peeblesiana (Croizat) W.T.Marshall; Cact. Succ. J. (Los Angeles) 19: 77 (1947)
= Utahia peeblesiana (Croizat) Kladiwa; Kakteen [H.Krainz] 40-41: CVIII b (1969)
subspecies :
subsp. fickeisenii (Hochstätter) Lüthy; Kakteen And. Sukk. 50(11): 278 (1999)
Distribution: USA (Arizona)
76 USA
Synonyms: hidden
= Acanthocereus marnierianus (Backeb.) Lodé; Cact.-Advent. Int. (Almeria) 98(Suppl.): 3 (2013), basionym not validly publ.
= Navajoa fickeiseniorum Backeb.; Cact. Succ. J. Gr. Brit. 22: 49 (1960), no type indicated.
= Navajoa peeblesiana subsp. fickeisenii (Backeb. ex Hochstätter) Hochstätter; Kakteen And. Sukk. 46(5): 116 (1995)
= Navajoa peeblesiana var. fickeisenii Backeb. ex Hochstätter; Succulenta (Netherlands) 73: 135 (1994)
= Neonavajoa peeblesiana subsp. fickeisenii (Backeb. ex Hochstätter) Doweld; Sukkulenty (Moscow) 2(2): 43 (1999)
= Pediocactus peeblesianus var. fickeisenii (Backeb. ex Hochstätter) L.D.Benson; Cact. Succ. J. (Los Angeles) 34: 59 (1962)
= Toumeya fickeiseniorum (Backeb.) Earle; Cacti Southw. 98 (1963), nom. inval.
species :
Pediocactus sileri (Daul) L.D.Benson; Cact. Succ. J. (Los Angeles) 33: 53 (1961)
Name: Gypsum Cactus, Siler´s Pincushion
Distribution: USA (N-Arizona: Coconino Co.)
76 USA
Synonyms: hidden
= Echinocactus sileri Daul; Illustr. Handb. Kakteenkunde 69 (1890)
= Utahia sileri (Daul) Britton & Rose; Cactaceae [Britton & Rose] 3: 215 (1922)
species :
Pediocactus simpsonii (Engelm.) Britton & Rose; Ill. Fl. N. U.S. [Britton & Brown], ed. 2, 2: 570 (1913)
Name: Mountain Cactus, Plains Cactus
Distribution: USA (S-Idaho, Montana, South Dakota, Wyoming, Utah, Colorado, N-New Mexico, N-Arizona)
73 USA 74 USA 76 USA 77 USA
Synonyms: hidden
= Echinocactus simpsonii Engelm.; Trans. Acad. Sci. St. Louis 2: 197 (1863)
= Echinocactus simpsonii f. minor (Engelm.) Schelle; Handb. Kakteenkult. 202 (1907)
= Echinocactus simpsonii var. minor Engelm.; Trans. Acad. Sci. St. Louis 2: 197 (1863)
= Echinocactus simpsonii var. robustior J.M.Coult.; Contr. U.S. Natl. Herb. 3: 377 (1896)
= Mammillaria purpusii K.Schum.; Monatsschr. Kakteenk. 4: 165 (1894)
= Mammillaria simpsonii (Engelm.) M.E.Jones; Zoe 3: 302 (1893)
= Mammillaria spaethiana Späth; Nursery Cat. (Späth) 1894-1895: ? (1895)
= Pediocactus bensonii Hochstätter; Cact.-Advent. Int. (Almeria) 35(122): 132 (2023)
= Pediocactus hermannii W.T.Marshall; Saguaroland Bull. 8: 78 (1954)
= Pediocactus indranus (Hochstätter) Hochstätter; Cact.-Advent. Int. (Almeria) 34(121): 9 (2022), et 35(122): 133 (2023)
= Pediocactus nigrispinus subsp. indranus (Hochstätter) Hochstätter; Cactaceae Rev. 6: 11 (2003)
= Pediocactus robustior (J.M.Coult.) Arp; Cact. Succ. J. (Los Angeles) 44(5): 222 (1972)
= Pediocactus simpsonii f. acklinii Hochstätter; Succulenta (Netherlands) 76(6): 264 (1997)
= Pediocactus simpsonii f. campestris Hochstätter; Succulenta (Netherlands) 76(6): 268 (1997)
= Pediocactus simpsonii f. dinosauriensis Hochstätter; Succulenta (Netherlands) 76(6): 266 (1997)
= Pediocactus simpsonii f. flaminggorgensis Hochstätter; Succulenta (Netherlands) 76(6): 269 (1997)
= Pediocactus simpsonii f. flinspachii Hochstätter; Succulenta (Netherlands) 76(6): 263 (1997)
= Pediocactus simpsonii f. kuenzleri Hochstätter; Succulenta (Netherlands) 76(6): 264 (1997)
= Pediocactus simpsonii f. montanensis Hochstätter; Succulenta (Netherlands) 76(6): 267 (1997)
= Pediocactus simpsonii f. muehlii Hochstätter; Succulenta (Netherlands) 76(6): 264 (1997)
= Pediocactus simpsonii f. prairie Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 92 (1995), anglice, without type
= Pediocactus simpsonii f. sandiamontanus Hochstätter; Succulenta (Netherlands) 76(6): 266 (1997)
= Pediocactus simpsonii subsp. bensonii (Engelm.) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 46 (1995)
= Pediocactus simpsonii subsp. bensonii Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 46 (1995), nom. nov.
= Pediocactus simpsonii subsp. idahoensis Hochstätter; Succulenta (Netherlands) 76(3): 124 (1997)
= Pediocactus simpsonii subsp. indranus (Hochstätter) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 43 (1995), no exact basionym page.
= Pediocactus simpsonii subsp. robustior (J.M.Coult.) Hochstätter; Gen. Pediocactus, Navajoa, Toumeya Revised 41 (1995)
= Pediocactus simpsonii var. caespiticus Backeb.; Cactaceae [Backeberg] 5: 2846 (1961)
= Pediocactus simpsonii var. hermannii (W.T.Marshall) W.T.Marshall; Saguaroland Bull. 11: 79 (1957)
= Pediocactus simpsonii var. indranus Hochstätter; Succulenta (Netherlands) 69: 179 (1990)
= Pediocactus simpsonii var. minor (Engelm.) Cockerell; Torreya 18: 180 (1918)
= Pediocactus simpsonii var. minor (Engelm.) L.D.Benson; (1961), isonym
= Pediocactus simpsonii var. robustior (J.M.Coult.) L.D.Benson; (1962)
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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