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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: 1809; 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; Pflanzenreich [Petermann] 2: 135 (1856)
= Opuntiaceae Desv.; Dict. Rais. Bot. 52, 385 (1817)
406.5911 Genus Eulychnia Phil.; Fl. Atacam. 23: 23 (1860)
Distribution: Peru and coastal Chile
Species listed in database: 6
= Philippicereus Backeb.; Jahrb. Deutsch. Kakteen-Ges. 1941: 75 (1942)
species :
Eulychnia acida Phil.; Linnaea 33: 80 (1864 publ. 1865)
Name: Copao [Chile]
Distribution: Chile (Atacama, Coquimbo)
85 CLE
Synonyms: hidden
= Cereus acidus (Phil.) K.Schum.; Gesamtbeschr. Kakt., Nachtr. 1: 22 (1903)
= Eulychnia acida var. elata F.Ritter; Kakteen Südamerika 3: 896 (1980)
= Eulychnia elata (F.Ritter) Lodé; Cact.-Advent. Int. (Almeria) 32(1): 55 (2020)
= Philippicereus acidus (Phil.) Guiggi; Cactology 5(Suppl. 8): 9 (2020)
= Philippicereus elatus (F.Ritter) Guiggi; Cactology 5(Suppl. 8): 9 (2020)
species :
Eulychnia breviflora Phil.; Fl. Atacam. 24 (1860)
Name: Copao, Tuna de Copado
Distribution: Chile (Antofagasta, Atacama, Coquimbo)
85 CLE
Synonyms: hidden
= Cereus chiloensis var. heteromorphus (Monv.) K.Schum.; Gesamtbeschr. Kakt. 63 (1897)
= Cereus coquimbanus K.Schum.; Gesamtbeschr. Kakt., Nachtr. 1: 23 (1903)
= Cereus heteromorphus Monv.; Hort. Universel 1: 221 (1839), nom. utique rej.
= Cereus longispinus Salm-Dyck ex Otto & A.Dietr.; Allg. Gartenzeitung [Otto & Dietrich] 13: 354 (1856)
= Eulychnia barquitensis F.Ritter; Kakteen Südamerika 3: 899 (1980)
= Eulychnia breviflora var. tenuis F.Ritter; Kakteen Südamerika 3: 898 (1980)
= Eulychnia longispina (Salm-Dyck ex Otto & Dietr.) F.Ritter; Kakteen And. Sukk. 16: 212 (1965)
= Eulychnia procumbens Backeb.; Descr. Cact. Nov. [Backeberg] 3: 6 (1963)
= Eulychnia saint-pieana F.Ritter; Taxon 13: 115 (1964)
= Eulychnia saint-pieana subsp. tenuis (F.Ritter) Guiggi; Cactology 5(Suppl. 8): 9 (2020)
= Eulychnia saint-pieana var. barquitensis (F.Ritter) A.E.Hoffm.; Cact. Fl. Silvestre Chile 142 (1989)
species :
Eulychnia castanea Phil.; Linnaea 33: 80 (1864 publ. 1865)
Distribution: Chile (Coquimbo, Valparaíso)
85 CLE
Synonyms: hidden
= Cereus castaneus (Phil.) K.Schum.; Gesamtbeschr. Kakt., Nachtr. 1: 22 (1903)
= Philippicereus castaneus (Phil.) Backeb.; Jahrb. Deutsch. Kakteen-Ges. Pt. 2, 29 (1941 publ. 1942)
species :
Eulychnia chorosensis P.Klaassen; Cact. Succ. J. (Los Angeles) 83(4): 172 (2011), nom. et. stat. nov.
Distribution: Chile (Atacama)
85 CLE
Synonyms: hidden
= Philippicereus chorosensis (P.Klaassen) Guiggi; Cactology 5(Suppl. 8): 9 (2020)
= Eulychnia acida var. procumbens F.Ritter; Kakteen Südamerika 3: 895 (1980)
species :
Eulychnia iquiquensis (K.Schum.) Britton & Rose; Cactaceae [Britton & Rose] 2: 83 (1920)
subspecies :
subsp. iquiquensis
Name: Copao [Chile]
Distribution: Chile (Tarapacá, Antofagasta, Atacama)
85 CLE
Synonyms: hidden
= Cereus iquiquensis K.Schum.; Monatsschr. Kakteenk. 99 (1904)
= Eulychnia aricensis F.Ritter; Taxon 13: 115 (1964)
= Eulychnia breviflora subsp. iquiquensis (K.Schum.) D.R.Hunt; Cactaceae Syst. Init. 14: 16 (2002)
= Eulychnia iquiquensis var. pullilana F.Ritter; Kakteen Südamerika 3: 901 (1980)
= Eulychnia morromorenoensis F.Ritter; Kakteen Südamerika 3: 901 (1980) (exact type not cited)
subspecies :
subsp. ritteri (Cullmann) D.R.Hunt; Cactaceae Syst. Init. 19: 13 (2005)
Distribution: Peru (Arequipa, Chala)
83 PER
Synonyms: hidden
= Eulychnia breviflora subsp. ritteri (Cullmann) D.R.Hunt; Cactaceae Syst. Init. 14: 16 (2002)
= Eulychnia ritteri Cullmann; Kakteen And. Sukk. 9: 121 (1958)
subspecies :
subsp. taltalensis (F.Ritter) Guiggi; Cactology 5(Suppl. 8): 9 (2020)
Distribution: Peru (Atacama)
83 PER
Synonyms: hidden
= Eulychnia taltalensis (F.Ritter) Hoxey; Cact. Succ. J. (Los Angeles) 83(4): 169 (2011)
= Eulychnia breviflora var. taltalensis F.Ritter; Kakteen Südamerika 3: 898 (1980)
species :
Eulychnia vallenarensis P.C.Guerrero & Helmut Walter; Phytotaxa 392(1): 89 (2019)
Distribution: Chile (Atacama)
85 CLE
Synonyms: hidden
= Philippicereus vallenarensis (P.C.Guerrero & Helmut Walter) Guiggi; Cactology 5(Suppl. 8): 10 (2020)
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A complete, synonymic checklist of the Higher Plants of the World

Version 25.07 (July 26th, 2025)

Covering 356,930 accepted species,
8,788 hybrids, 48,065 accepted infraspecific taxa and 1,003,736 synonyms,
in total 1,417,519* 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