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407.0000 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: 1840; hybrids: 80
= 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)
407.6856 Genus Micranthocereus Backeb.; Blätt. Kakteenf. 1938(6): [22] (1938)
Distribution: Brazil (Bahia, Minas Gerais)
Species listed in database: 9
= Austrocephalocereus Backeb.; Jahrb. Deutsch. Kakteen-Ges. Teil 2 (Okt.), Blatt 21, et Blätt. Kakteenf. 1938, No. 6, p. 9, in clavi, p. 22, diagn. lat. (1937)
= Viridicereus Guiggi; Cactology 5(Suppl. 15): 4 (2024)
species :
Micranthocereus albicephalus (Buining & Brederoo) F.Ritter; Kakteen Südamerika 1: 108 (1979)
Distribution: NE-Brazil (Bahia); SE-Brazil (Minas Gerais)
84 BRA
Synonyms: hidden
= Austrocephalocereus albicephalus Buining & Brederoo; Kakteen And. Sukk. 24(4): 73 (1973)
= Coleocephalocereus albicephalus (Buining & Brederoo) F.H.Brandt; Kakteen Orch. Rundschau 1981(5): 124 (1981)
= Micranthocereus monteazulensis F.Ritter; Kakteen Südamerika 1: 105 (1979)
species :
Micranthocereus alvinii (M.Machado & Hofacker) N.P.Taylor & M.Lowry; Bradleya 41: 131 (2023)
Distribution: NE-Brazil (Bahia)
84 BRA
Synonyms: hidden
= Micranthocereus polyanthus subsp. alvinii M.Machado & Hofacker; Kakteen And. Sukk. 55(5): 127 (2004)
= Micranthocereus flaviflorus subsp. alvinii (M.Machado & Hofacker) Lodé; Int. Cact. Advent. 102: 30 (2014)
species :
Micranthocereus aureispinus F.Ritter; Kakteen Südamerika 1: 107 (1979)
Distribution: Brazil (Minas Gerais)
84 BRA
Synonyms: hidden
= Micranthocereus oliveirae P.J.Braun; Kakteen And. Sukk. 66: 314 (2015)
species :
Micranthocereus auriazureus Buining & Brederoo; Cact. Succ. J. (Los Angeles) 45(3): 120 (1973)
Distribution: SE-Brazil (Minas Gerais)
84 BRA
Remarks: probably in Pilosocereus fide Fantinati (2020)
species :
Micranthocereus flaviflorus Buining & Brederoo; Kakteen And. Sukk. 25(2): 25 (1974)
subspecies :
subsp. flaviflorus
Distribution: NE-Brazil (Bahia)
84 BRA
Synonyms: hidden
= Micranthocereus densiflorus Buining & Brederoo; Cact. Succ. J. (Los Angeles) 46(3): 113 (1974)
= Micranthocereus flaviflorus subsp. densiflorus (Buining & Brederoo) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 132 (1995)
subspecies :
subsp. uilianus (Brederoo & C.A.L.Bercht) P.J.Braun & Esteves; Kakteen And. Sukk. 59(5): 125 (2008)
Distribution: Brazil (Bahia)
84 BRA
Synonyms: hidden
= Micranthocereus flaviflorus var. uilianus (Brederoo & C.A.L.Bercht) P.J.Braun & Esteves; Succulenta (Netherlands) 74(3): 132 (1995)
= Micranthocereus uilianus Brederoo & C.A.L.Bercht; Succulenta (Netherlands) 63(8): 178 (1984)
species :
Micranthocereus polyanthus (Werderm.) Backeb.; Jahrb. Deutsch. Kakteen-Ges. Pt. 2, 51 (1941 publ. 1942)
Distribution: NE-Brazil (Bahia)
84 BRA
Synonyms: hidden
= Arrojadoa polyantha (Werderm.) D.R.Hunt; Bradleya 5: 92 (1987)
= Cephalocereus polyanthus Werderm.; Repert. Spec. Nov. Regni Veg. Sonderbeih. C., t. 43 (1932), Werderm. Brasil. Säulenkakteen 114 (1933)
species :
Micranthocereus purpureus (Gürke) F.Ritter; Kakteen And. Sukk. 19: 157 (1968)
Distribution: NE-Brazil (Bahia)
84 BRA
Synonyms: hidden
= Austrocephalocereus lehmannianus (Werderm.) Backeb.; Cact. Succ. J. (Los Angeles) 23: 149 (1951)
= Austrocephalocereus purpureus (Gürke) Backeb.; Jahrb. Deutsch. Kakteen-Ges. Pt. 2, 53 (1941 publ. 1942)
= Cephalocereus lehmannianus Werderm.; Repert. Spec. Nov. Regni Veg. Sonderbeih. C., t. 46 (1932), Werderm. Brasil. Säulenkakteen 118 (1933)
= Cephalocereus purpureus Gürke; Monatsschr. Kakteenk. 18: 86 (1908)
= Cereus purpureus (Gürke) Luetzelb.; Estud. Bot. Nordéste 3: 111 (1926)
= Coleocephalocereus lehmannianus (Werderm.) F.H.Brandt; Kakteen Orch. Rundschau 1981(5): 124 (1981), without basionym page.
= Micranthocereus haematocarpus F.Ritter; Kakteen Südamerika 1: 105 (1979)
= Micranthocereus lehmannianus (Werderm.) F.Ritter; Kakteen And. Sukk. 19: 157 (1968)
= Micranthocereus ruficeps F.Ritter; Kakteen Südamerika 1: 106 (1979)
species :
Micranthocereus streckeri Van Heek & Van Criek.; Kakteen And. Sukk. 37(5): 105 (1986)
Distribution: NE-Brazil (Bahia)
84 BRA
Synonyms: hidden
= Austrocephalocereus streckeri (Van Heek & Van Criek.) Mottram; Cactician 5: 15 (2014)
species :
Micranthocereus violaciflorus Buining; Kakteen And. Sukk. 20: 129 (1969)
Distribution: SE-Brazil (Minas Gerais)
84 BRA
Synonyms: hidden
= Arrojadoa violaciflora N.P.Taylor; Ann. Bot. (Oxford) 132(5): 1002 (2023)
= Viridicereus violaciflorus (Buining) Guiggi; Cactology 5(Suppl. 15): 5 (2024)
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A complete, synonymic checklist of the Higher Plants of the World

Version 26.08 (August 2nd, 2026)

Covering 360,349 accepted species,
8,927 hybrids, 47,544 accepted infraspecific taxa and 1,011,667 synonyms,
in total 1,428,487* names

[*about 20,000 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