Echinocereus morricalii – Echinocereus reichenbachianus

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Echinocereus morricalii Riha 1975:75.
  Type - locality: Mexico, Nuevo Leon, Barranca de las Garrapatas south of Monterrey; D. B. Morrical (PRC 322).
    Nomenclatural synonyms:
      Echinocereus viereckii var. morricalii (Riha) Taylor 1985b:93.
      Echinocereus blanckii var. inermis* Heyer 1989:26 pro syn.
      Echinocereus viereckii subsp. morricalii (Riha) Taylor 1997:10.
*Echinocereus multiangularis = Haageocereus sp.
*Echinocereus multiangularis var. limensis = Haageocereus sp.
*Echinocereus multiangularis var. maletianus = ?
*Echinocereus multiangularis var. pallidior = ?
Echinocereus multicostatus Cels ex Rumpler 1886:834.
  Type - locality: unknown; ? (?).
    Nomenclatural synonyms:
      Echinocereus leeanus var. multicostatus (Cels ex Rumpler) Schumann 1897:289.
      Echinocereus triglochidiatus var. multicostatus (Cels ex Rumpler) Marshall 1953:67.
        Note: this species is often considered a taxonomic synonym of Echinocereus leeanus, but its may be of South American
          origin and not an Echinocereus.
Echinocereus munzii (Parish) Benson 1941:361.
  basionym: Cereus munzii Parish 1926:48.
    Type - locality: California, Riverside Co., 2 miles below Kenworthy, 1400m.; Munz & Johnson 5570, 21 May 1922 (UC).
      Nomenclatural synonyms:
        Echinocereus engelmannii var. munzii (Parish) Pierce & Fosberg 1933:123.
        Echinocereus engelmannii fa. munzii* (Parish) Ruinaard, Succulenta 89(3): , Nom. inval. (Art. 33.4),
Echinocereus neocapillus (Weniger) Blum & Lange in Blum et al. 1998b:219.
  = Echinocereus chloranthus var. neocapillus.
Echinocereus neomexicanus Standley 1908:87-88.
  Type - locality: New Mexico, Dona Ana Co., mesa west of Organ Mtns.; Standley 383, 1907 (MO).
    Nomenclatural synonyms:
      Echinocereus triglochidiatus var. neomexicanus (Standley) Standley ex Marshall & Bock 1941:118.
      Cereus neomexicanus (Standley) Tidestrom 1941:298.
      Echinocereus polyacanthus var. neomexicanus* Weniger1970:44 nom. inval.
      Echinocereus coccineus var. neomexicanus* Parker 1996:4 nom. nud.
      × Echinocereus neomexicanus Blum et al. 1998b:449.
      ×Echinocereus roetteri var. neomexicanus ( J.M.Coult. ) A. D. Zimmerman in Powell & Weedin 2004:211. pro sp. hybr.
        Note: This plant has been confused with Echinocereus rosei under the name Echinocereus triglochidiatus var. neomexicanus
          [Benson] and Echinocereus polyacanthus [Bravo 1991:24]. It is probably a natural hybrid of E. rosei and E. chloranthus.
Echinocereus neoroemeri* (Muhlenpfordt) Ito 1971:227. nom. illegit.
  = Echinocereus roemeri (Muhlenpfordt) Rydberg.
Wilcoxia nerispina* Backeberg 1960:2078 nom. invalid.
  = Echinocereus schmollii.
Echinocereus nicholii (Benson) Parfitt 1987:157-158.
  = Echinocereus engelmannii var. nicholii.
Echinocereus nicholii fa. guaymasensis* Parker 1996:1 nom. nud.
Echinocereus nicholii subsp. llanuraensis Rutow 1995:61-71.
  Type - locality: Mexico, Sonora, Guaymas 300m; (ZSS  A 16936).
    Nomenclatural synonyms:
      Echinocereus nicholii fa. llanuraensis* Parker 1996:1 nom. nud.
      Echinocereus engelmannii subsp. llanuraensis ( Rutow ) Felger 1999: 20.
Echinocereus nicholii fa. llanuraensis* Parker 1996:1 nom. nud.
  = Echinocereus nicholii subsp. llanuraensis.
Echinocereus nigrispinus* Kohres Catalog 1979. nom. nud.
Echinocereus nivilus* Heyer 1989:26 nom. nud. [= Lau 1101].
Echinocereus nivosus Glass & Foster 1978a:18-19.
  Type - locality: Mexico, Coahuila, Southwest of General Cepeda, 3 km. north of El Cinco; Glass & Foster 3764, Feb. 1972
    (POM).
      Note: Echinocereus albatus* Backeberg 1960:2007 nom. inval. is usually considered a taxonomic synonym of this species.
Echinocereus nivosus fa. albatus* Parker 1996:3 nom. nud.
  = Echinocereus albatus*.
Echinocereus noctiflorus* Hort. ex Backeberg 1960:1991 pro syn.
  = Echinocereus cucumis.
Echinocereus nocturniflorus* Hort. ex Backeberg 1960:1991 pro syn.
  = Echinocereus cucumis.
Echinocereus nogalensis* Haage 1900:159 nom. nud. [Perhaps = Echinocereus pectinatus var. rigidissimus].
Echinocereus occidentalis (Taylor) Richer et al. 2009:23.
  = Echinocereus stramineus var. occidentalis Taylor 1988:70-71.
Echinocereus ochoterenae Ortega 1928:88-90.
  Type - locality: Mexico, Sinaloa, near Concordia, Cerro de la Cobriza; J.G. Ortega, 24 May 1927 (MEXU?).
    Nomenclatural synonyms:
      Echinocereus subinermis var. ochoterenae (Ortega) Unger 1984:164.
      Echinocereus subinermis subsp. ochoterenae (Ortega) Taylor 1997:10.
        Note: Ortega described varieties "A" and "B", but did not give them names.
Echinocereus octacanthus (Muhlenpfordt) Britton & Rose 1922:13.
  basionym: Echinopsis octacantha Muhlenpfordt 1848:19.
    Type - locality: Northern Texas [San Saba River according to Engelmann]; Roemer (?).
      Nomenclatural synonyms:
        Cereus octacanthus (Muhlenpfordt) Coulter 1896:395.
        Echinocereus coccineus var. octacanthus* Boissevain & Davidson 1940:39 nom. illegit.
        Echinocereus triglochidiatus var. octacanthus* Muhlenpfordt ex Marshall & Bock 1941:118. nom. illegit.
          Note: The proper application of this name is uncertain. If it can be shown to be one of the members of the Echinocereus
            coccineus group it would have priority since it was published first. This would cause numerous nomenclatural changes.
Echinocereus occidentalis (Taylor) Rischer & Breckwoldt 2009:23.
  = Echinocereus stramineus subsp. occidentalis Taylor 1997:10.
Echinocereus oklahomensis Lahman 1950:128. [Originally published in Lahman 1935:141 without Latin diagnosis].
  Type - locality: Oklahoma, Wichita Mtns.; Lahman (MO).
    Note: Usually consisdered a taxonomic synonym of Echinocereus baileyi.
Echinocereus orcuttii Rose ex Orcutt 1926:4.
  Type - locality: Mexico, Baja California, Cape Colset; Orcutt (?).
    Note: Usually consisdered a taxonomic synonym of Echinocereus maritimus.
Echinocereus ortegae Rose ex Ortega 1929:24.
  Type - locality: Mexico, Sinaloa, Cuenca del Rio Tamazula, Sianori, 800m.; Ortega (?).
    Note: Taylor (1993) lists Echinocereus scheeri var. koehresianus as a taxonomic synonym of this species.
Echinocereus ortegae subsp. koehresianus (Frank) Rischer & Frank 1996:93.
  = Echinocereus scheeri var. koehresianus.
Echinocereus pacificus* Haage 1892:118 nom.nud.
Echinocereus pacificus (Engelmann ex Orcutt) Britton & Rose 1922:12.
  basionym: Cereus phoeniceus var. pacificus Engelmann ex Orcutt 1886:46.
    Type - locality: Mexico, Baja California Norte, Rio San Carlos; Parry et al., 25 Jan. 1883 (MO).
      Nomenclatural synonyms:
        Cereus pacificus (Engelmann ex Orcutt) Coulter 1896:397.
        Echinocereus triglochidiatus var. pacificus (Engelmann ex Orcutt) Engelmann ex Marshall & Bock 1941:118.
        Echinocereus polyacanthus var. pacificus (Engelmann ex Orcutt) Taylor 1984:160.
        Echinocereus polyacanthus subsp. pacificus (Engelmann ex Orcutt) Breckwoldt 1996:15.
Echinocereus pacificus subsp. mombergerianus Blum, Rischer & Rutow in Blum et al. 1998b:418.
  = Echinocereus mombergerianus.
Echinocereus palmeri Britton & Rose 1922:34.
  Type - locality: Mexico, Chihuahua, hill near Cd. Chihuahua; E. Palmer 121, Apr. 1908 (US).
Echinocereus palmeri subsp. escobedensis Rischer 2003b:54.
  Type - locality: Mexico, Durango; Lau 1565, 18 March 1988 (PR 11691a) ex cult. coll. Rischer.
Echinocereus palmeri subsp. mazapil H.M.Hern. & Gomez-Hin.2004:2.
  Type - locality: Mexico, Zacatecas, Municipio Mazapil; H.M. Hernández, C. Gómez-Hinostrosa & B. Goettsch 3528 (MEXU).
Echinocereus pamanesiorum Lau 1981:36-41.
  Type - locality: Mexico, Zacatecas, Rio Huaynamota, bridge between Huejuquilla & San Juan Capistrano; Lau 1247 (MEXU).
Echinocereus pamanesiorum subsp. bonatzii (Romer) Romer 1997:45.
  = Echinocereus bonatzii.
Echinocereus papillosus Linke ex Rumpler 1886:783.
  Type - locality: unknown; ? (?).
    Nomenclatural synonyms:
      Cereus papillosus (Linke ex Rumpler) Berger 1905:80.
      Echinocereus blanckii var. papillosus (Linke ex Rumpler) Benson 1969d:126.
      Echinocereus berlandieri var. papillosus (Linke ex Rumpler) Benson 1976:59.
        Note: Benson uses the names Echinocereus blanckii var. angusticeps and Echinocereus berlandieri var. angusticeps for this
          plant. Usually listed as Echinocereus papillosus Linke ex Rumpler 1886:783.
Echinocereus papillosus var. angusticeps (Clover) Marshall & Bock 1941:119.
  = Echinocereus angusticeps.
Echinocereus papillosus subsp. angusticeps* Blum 1997 Seed List nom. nud.
  = Echinocereus angusticeps.
Echinocereus papillosus var. giganteus* Bailey 1941:270 nom. nud.
Echinocereus papillosus var. rubescens Hildmann ex Schelle1926:165.
  Type - locality: unknown; ? (?).
Echinocereus parkeri Taylor 1988:73.
  Type - locality: Mexico, Nuevo Leon, between La Poza & Puerto de los Pastores; Hansen et al. 3863 (MEXU).
    Nomenclatural synonyms:
      Echinocereus stramineus var. parkeri* Seed list 1996 - British Cactus and Succulent Journal. 
Echinocereus parkeri subsp. arteagensis Blum & Lange in Blum et al. 1998b:175.
  Type - locality: Mexico, Coahuila - Nuevo Leon Border, Arteaga Canyon, 2250 m.; U. Guzman in Sánchez- Mejorada 3807
    (MEXU).
    Nomenclatural synonyms:
      Echinocereus parkeri subsp. arteagensis* (Blum & Lange) Frank & Scherer 1998:61. nom. inval.
Echinocereus parkeri subsp. arteagensis* (Blum & Lange) Frank & Scherer 1998:61. nom. inval.
Echinocereus parkeri fa. barcena* Parker 1996:3 nom. nud.
  = Echinocereus barcena.
Echinocereus parkeri var. gonzalezii Taylor 1988:74.
  Type - locality: Mexico, Tamaulipas, Sierra de las Vacas, 4km NE of San Jose d'Llano 1750m.; Gonzalez Medrano 8515 (MEXU).
Echinocereus parkeri subsp. gonzalezii (Taylor) Taylor 1997:9.
  = Echinocereus parkeri var. gonzalezii.
Echinocereus parkeri var. mazapilensis* K. Neumann 1993 nom. prov. Kaktusblüte p. 55.
Echinocereus parkeri subsp. mazapilensis Blum & Lange in Blum et al. 1998b:172.
  Type - locality: Mexico, Zacatecas, 0.3 km from El Cobre near Mazapil, 2750 m.; Sanchez - Mejorada et al. 4041 (MEXU).
Echinocereus parkeri subsp. rayonesensis (Taylor) Felix & Blum 2011:99.
  = Echinocereus rayonesensis Taylor 1988:75-76.
Echinocereus paucispinus (Engelmann) Loder 1882:445.
  basionym: Cereus paucispinus Engelmann 1856:285. [see Engelmann 1859:34].
    Type - locality: Texas, San Pedro River; Wright, 1849 (MO). cultivated from original seeds.
      Nomenclatural synonyms:
        Echinocereus paucispinus* Engelmann ex Rumpler 1886:794 nom. illegit.
        Echinocereus triglochidiatus var. paucispinus (Engelmann) Engelmann ex Marshall & Bock 1941:117.
        Echinocereus coccineus var. paucispinus (Engelmann) Ferguson 1989:222.
        Echinocereus coccineus subsp. paucispinus Blum, Lange & Rutow in Blum et al. 1998b:433.
          Note:Usually cited as Echinocereus paucispinus Engelmann ex Rumpler 1886:794.
Echinocereus paucispinus var. flavispinus* Haage 1892:118 nom. nud.
Echinocereus paucispinus var. flavispinus* Walton 1899b:18 nom. nud.
Echinocereus paucispinus var. flavispinus Hort. ex Schelle 1926:178.
  Type - locality: unknown; ? (?).
Echinocereus paucispinus var. fulvispinus* Haage 1897:12 nom. nud.
Echinocereus paucispinus var. fulvispinus Bowles 1908:28.
  Type - locality: unknown; ? (?).
Echinocereus paucispinus var. gonacanthus (Engelmann & Bigelow) Schumann 1897:281
  = Echinocereus gonacanthus.
Echinocereus paucispinus var. hexaedrus (Engelmann & Bigelow) Schumann 1897:281
  = Echinocereus hexaedrus.
Echinocereus paucispinus var. nigrispinus* Haage 1897:12 nom. nud.
Echinocereus paucispinus var. nigrispinus Bowles 1908:28.
  Type - locality: unknown; ? (?).
Echinocereus paucispinus var. triglochidiatus* Schumann 1897:281 nom. illegit.
  = Echinocereus triglochidiatus.
Echinocereus pectinatus (Scheidweiler) Engelmann 1848a:110.
  basionym: Echinocactus pectinatus Scheidweiler 1838:492.
    Type - locality: Mexico, San Luis Potosi, Villa del Penasco; Galeotti (?).
      Nomenclatural synonyms:
        Echinopsis pectinata (Scheidweiler) Fennel 1843:282.
        Cereus pectinatus (Scheidweiler) Engelmann 1849:50.
          Note: Echinocereus cernosus* Frič 1929:24 nom. nud. is listed by Backeberg as a synonym of this species.
            Echinocactus pectiniferus Lemaire 1839:25 is usually considered a taxonomic synonym of this species.
Echinocereus pectinatus var. adustus* Haage 1859:19 nom. nud.
Echinocereus pectinatus var. adustus [mispelled adjustus] (Engelmann) Daul 1890:78.
  = Echinocereus adustus.
  Note: Usually ascribed to Schumann 1897:271.
Echinocereus pectinatus fa. adustus (Engelmann) Voss 1894:378.
  = Echinocereus adustus.
Echinocereus pectinatus fa. adustus subfa. castaneus (Engelmann) Engelm. ex Schelle 1907:132.
Echinocereus pectinatus var. adustus fa. castaneus (Engelmann) Engelm. ex Schelle 1926:174.
  = Echinocereus caespitosus var. castaneus.
Echinocereus pectinatus var. armatus* Engelmann ex Seitz 1870:11 nom. nud.
Echinocereus pectinatus var. armatus (Poselger) Poselger ex Rumpler 1886:818.
  basionym: Cereus pectinatus var. armatus Poselger 1853:134.
    Type - locality: Mexico, Nuevo Leon, near Monterrey; Poselger (?).
      Nomenclatural synonyms:
        Cereus pectinatus var. spinosus* Coulter 1896:357.
        Echinocereus spinosus Coulter ex Schelle 1926:174 pro syn.
        Echinocereus armatus (Poselger) Poselger ex Backeberg & Knuth 1935:318.
        Echinocereus caespitosus var. armatus (Poselger) Poselger ex Borg 1937:174.
        Echinocereus reichenbachii var. armatus (Poselger) Taylor 1985b:133.
        Echinocereus fitchii var. armatus* Mesa Garden Seed Catalog 1996 nom. nud.
        Echinocereus reichenbachii subsp. armatus (Poselger) Taylor 1997:9.
        Echinocereus fitchii subsp. armatus (Poselger) Blum et al. 1998b:314.
Echinocereus pectinatus var. bauerii Rother 1923:127.
  = Echinocereus bauerii Rother 1902:61
Echinocereus pectinatus var. bristolii (Marshall) Marshall 1956b:81-82.
  = Echinocereus bristolii.
Echinocereus pectinatus var. caespitosus (Engelmann) Schumann 1897:272.
  = Echinocereus caespitosus.
Echinocereus pectinatus fa. candicans* Hort. ex Schelle 1907:132 nom. nud.
Echinocereus pectinatus var. candidissimus* Seitz 1878:11 nom. nud.
Echinocereus pectinatus var. castaneus* Seitz 1878:11 nom. nud.
Echinocereus pectinatus var. castaneus (Engelmann) Daul 1890:78.
  = Echinocereus caespitosus var. castaneus.
Echinocereus pectinatus fa. castaneus (Engelmann) Krainz 1967:50.
  = Echinocereus caespitosus var. castaneus.
*Echinocereus pectinatus var. centralis Coulter ex Schumann 1897:271.
  error in determination. = Echinomastus centrilis.
Echinocereus pectinatus var. chloranthus* Haage 1892:118 nom. nud.
Echinocereus pectinatus var. chrysacanthus Schumann 1897:272.
  Type - locality: Mexico; ? (?).
    Nomenclatural synonyms:
      Echinocereus caespitosus var. chrysacanthus (Schumann) Schumann ex Borg 1937:174.
Echinocereus pectinatus var. crassispinus Runge ex Mathsson 1890:465.
  Type - locality: Mexico, Coahuila, Saltillo; Mathsson (?).
Echinocereus pectinatus var. ctenoides* Hort. ex Schelle1907:130 pro syn.
  = Echinocereus ctenoides.
Echinocereus pectinatus var. ctenoides* Weniger 1971:31 nom. inval. (no basionym given).
  = Echinocereus ctenoides.
Echinocereus pectinatus var. ctenoides (Engelmann) Weniger ex Frank 1991:135.
  = Echinocereus ctenoides.
Echinocereus pectinatus subsp. ctenoides (Engelmann) Frank 1997:136.
  = Echinocereus ctenoides.
Echinocereus pectinatus var. dasyacanthus (Engelmann) Engelmann ex Haage 1892:118.
  = Echinocereus dasyacanthus.
Echinocereus pectinatus var. dasyacanthus* Earle 1971:80 nom. illegit. (later homonym).
  = Echinocereus dasyacanthus.
Echinocereus pectinatus var. dasyacanthus* Taylor 1984:179 nom. illegit. (later homonym).
  = Echinocereus dasyacanthus.
Echinocereus pectinatus var. grandicostatus* Schmoll ex Backeberg 1960:2043 nom. nud.
Echinocereus pectinatus var. grandis (Britton & Rose) Marshall 1955:68.
  = Echinocereus grandis.
Echinocereus pectinatus var. jamauvei* Frič ex Orcutt 1926:4 pro syn.
  = Echinocereus castaneus.
Echinocereus pectinatus var. labouretianus* Seitz 1870:11 nom. nud.
Echinocereus pectinatus var. laevior* (Monatsschrift fur Kakteenkunde index 1912:56) nom. nud.
Echinocereus pectinatus var. minor (Engelmann) Benson 1968:125 for Echinocereus dasyacanthus var. minor*.
  Note: Benson uses this name for Echinocereus roetteri.
Echinocereus pectinatus var. neomexicanus (Coulter) Benson 1944:256.
  = Echinocereus dasyacanthus var. neomexicanus*.
    Note: Benson uses this name for Echinocereus dasyacanthus.
Echinocereus pectinatus var. ordustus* Lakerveld Catalog. nom. nud.
Echinocereus pectinatus var. pailanus* Schwarz ex Backeberg 1960:2043 nom. nud.
Echinocereus pectinatus var. pailensis* Backeberg 1937:21. nom. nud.
Echinocereus pectinatus var. pailensis* Bailey 1941:271 nom. nud.
Echinocereus pectinatus var. pictus* Seitz 1870:11 nom. nud.
Echinocereus pectinatus var. rectispinus* Zimmerman1993:277 nom. nud.
  = Echinocereus dasyacanthus var. rectispinus.
Echinocereus pectinatus var. reichenbachii (Terscheck ex Walpers) Werdermann 1930:t5.
  = Echinocereus reichenbachii.
Echinocereus pectinatus var. rigidissimus (Engelmann) Engelmann ex Rumpler 1886:818.
  basionym: Cereus pectinatus var. rigidissimus Engelmann 1856:279.
    Type - locality: Arizona, Sierra Pajarito; Schott, 1855 (MO 2016861).
      Nomenclatural synonyms:
        Echinocereus pectinatus var. robustior* Hort. ex Hirscht 1897:95 pro syn.
        Echinocereus candicans* Runge ex Haage 1900:157 pro syn.
        Echinocereus rigidissimus (Engelmann) Hort. ex F. A. Haage 1897:13.
        Echinocereus robustior* Britton & Rose 1922:28 pro syn.
        Echinocereus dasyacanthus var. rigidissimus (Engelmann) Marshall & Bock 1941:119.
        Echinocereus pectinatus fa. rigidissimus (Engelmann) Krainz 1967:50.
          Note: Usually listed as Echinocereus rigidissimus Rose 1909a:293. Echinocereus nogalensis* Haage 1900:159 nom. nud. is
            usually considered a synonym of this plant.
Echinocereus pectinatus fa. rigidissimus (Engelmann) Krainz 1967:50.
  = Echinocereus pectinatus var. rigidissimus.
Echinocereus pectinatus var. robustior* Hort. ex Hirscht 1897:95 pro syn.
  = Echinocereus pectinatus var. rigidissimus.
Echinocereus pectinatus var. robustus Bauer ex Wittmack 1890:513.
  Type - locality: Mexico, Sonora, Nogales; ? (?).
    Note: usually considered a taxonomic synonym of Echinocereus pectinatus var. rigidissimus.
Echinocereus pectinatus var. rotatus (Linke) Linke ex Haage 1892:118.
  = Echinocereus rotatus.
Echinocereus pectinatus var. rubescens* Weniger 1970:21-22 nom. nud.
Echinocereus pectinatus var. rubispinus Frank & Lau in Frank 1982:32-35.
  Type - locality: Mexico, Chihuahua, Canon de Barbarocas in Sierra Obscura, 1600-1800m.; Lau 088 (ZSS AA 18-30).
    Nomenclatural synonyms:
      Echinocereus rigidissimus var. rubispinus (Frank & Lau) Taylor 1984:175.
      Echinocereus rigidissimus subsp. rubispinus Taylor 1997:9.
Echinocereus pectinatus var. rungei* Hort. ex Schelle 1926:174 nom. nud.
Echinocereus pectinatus var. rufispinus* Daul 1890:78 nom. nud.
Echinocereus pectinatus var. rufispinus Schumann 1897:272.
  Type - locality: Mexico; ? (?).
    Nomenclatural synonyms:
      Echinocereus caespitosus var. rufispinus (Schumann) Schumann ex Borg 1951:221.
Cereus pectinatus fa. rufispinus (Engelmann) Voss 1894:378.
  = Echinocereus rufispinus.
E. pectinatus subsp. rutowiorum Blum 2014:24-32.
  Type - locality: Mexico; Chihuahua, Municipio de Chihuahua, east  of El Olivio; Anonymous 356, 2006, 1650m, April 2006
    (KR21723).
Echinocereus pectinatus var. scopulorum (Britton & Rose) Marshall 1955:61.
  = Echinocereus scopulorum.
Echinocereus pectinatus var. sonorensis* (Kaktusy 1973 according to Evanich 1989:111).
Cereus pectinatus var. spinosus* Coulter 1896:357 nom. illegit.
  Note: an unnecessary new name for Echinocereus pectinatus var. armatus.
Echinocereus pectinatus var. steereae* Rumpler ex Weniger 1970:32 pro syn.
  = Echinocereus steereae.
Echinocereus pectinatus var. tamaulipensis Frič ex Schelle 1926:174.
  Type - locality: unknown; ? (?).
    Nomenclatural synonyms:
      Echinocereus caespitosus var. tamaulipensis (Frič) Frič ex Borg 1937:174.
Echinocereus pectinatus var. texensis* Horner ex Seitz 1870:11 nom. nud.
Echinocereus pectinatus var. texensis Hort. ex Rumpler 1886:817.
  Type - locality: Texas; ? (?).
Echinocereus pectinatus fa. texensis* Hooker ex Schelle 1907:132 nom. nud.
Echinocereus pectinatus var. wenigeri Benson 1968:124.
  Type - locality: Texas, Valverde Co, near Langtry, Benson 16,521 (POM 311338).
    Nomenclatural synonyms:
      Echinocereus pectinatus subsp. wenigeri.
Echinocereus pectinatus subsp. wenigeri (Benson) Blum & Rutow in Blum et al. 1998: 111.
  = Echinocereus pectinatus var. wenigeri.
Echinocactus pectiniferus Lemaire 1839:25.
  Type - locality: unknown; ? (?).
    Nomenclatural synonyms:
      Cereus pectiniferus (Lemaire) Labouret 1853:320.
        Note: usually considered a taxonomic synonym of Echinocereus pectinatus.
Echinocactus pectiniferus var. laevior Monville ex Lemaire 1839:26.
  Type - locality: unknown; ? (?).
    Nomenclatural synonyms:
      Echinopsis pectinata var. laevior (Monville ex Lemaire) Monville ex Forster 1846:365.
*Echinocereus pencilliformis Linke 1858 [of Bolivian origin and thus not an Echinocereus].
Echinocereus pensilis (K. Brandegge) J. A. Purpus 1908:5.
  basionym: Cereus pensilis K. Brandegee 1904:192.
    Type - locality: Mexico, Baja California Sur, Sierra de Laguna; T. S. Brandegee 246, Jan/Feb. 1890 (UC).
      Nomenclatural synonyms:
        Morangaya pensilis (K. Brandegee) Rowley 1974b:44-45.
Echinocereus pentalophus* Engelmann ex Haage 1859:20 nom. nud.
Echinocereus pentalophus* Lemaire 1868:56. nom. nud.
  [Probably = Echinocereus pentalophus De Candolle ex Rumpler].
Echinocereus pentalophus (De Candolle) Lemaire ex Rumpler 1886:774.
  basionym: Cereus pentalophus De Candolle 1828:117.
    Type - locality: Mexico, Hidalgo, near Zimapan; Coulter (?).
      Nomenclatural synonyms:
        Cereus propinquus* Hort. Genev. ex Walpers 1843:275 pro syn.
        Echinocereus pentalophus var. aureovariegatus* Ito 1952:134 nom. nud.
Echinocereus pentalophus var. ehrenbergii (Pfeiffer) Backeberg 1960:2003.
  = Echinocereus ehrenbergii.
Echinocereus pentalophus var. leonensis (Mathsson) Taylor 1985b:78.
  = Echinocereus leonensis.
Echinocereus pentalophus subsp. leonensis (Mathsson) Taylor 1997:9.
  = Echinocereus leonensis.
Echinocereus pentalophus var. leptacanthus* Haage 1859:20 nom. nud.
Echinocereus pentalophus var. leptacanthus* Lemaire ex Rumpler 1886:775 nom. illegit.
  = Echinocereus leptacanthus.
Echinocereus pentalophus var. procumbens (Engelmann) Fournier 1935:25.
  = Echinocereus procumbens.
Echinocereus pentalophus fa. procumbens* Parker 1996:4 nom. nud.
  = Echinocereus procumbens.
Echinocereus pentalophus subsp. procumbens (Engelmann) Blum & Lange in Blum et al. 1998b:129.
  = Echinocereus procumbens.
Cereus pentalophus var. radicans DeCandolle1828:117.
  Type - locality: Mexico, Hidalgo, near Zimapan; Coulter (?).
    Nomenclatural synonyms:
      Cereus propinquus* Hort. Genev. ex Walpers 1843:275 pro syn.
Echinocereus pentalophus var. radicans* Weniger 1970:51 nom. inval.
Echinocereus pentalophus var. radicans* Weniger 1970:51 nom. inval. (no basionym given).
  = Cereus pentalophus var. radicans.
Cereus pentalophus var. simplex De Candolle 1828:117.
  Type - locality: Mexico, Hidalgo, near Zimapan; Coulter (?).
    Nomenclatural synonyms:
      Cereus propinquus* Salm Dyck ex Otto:1833:366. nom. nud.
      Cereus propinquus* De Candolle ex Walpers 1843:333 pro syn.
      Echinocereus propinquus De Candolle ex Haage 1892:118.
      Echinocereus pentalophus var. simplex* Weniger 1970:51nom. inval.
Echinocereus pentalophus var. simplex* Weniger 1970:51 nom. inval. (no basionym given).
  = Cereus pentalophus var. simplex.
Cereus pentalophus var. subarticulatus De Candolle 1828:117.
  Type - locality: Hidalgo, near Zimapan; Coulter (?).
    Nomenclatural synonyms:
      Cereus propinquus var. subarticulatus* Pfeiffer ex Forster 1846:373 pro syn.
      Cereus leptacanthus De Candolle ex Salm-Dyck 1845:27.
      Echinocereus leptacanthus Gaillard 1864:209.
      Echinocereus pentalophus var. subarticulatus* Weniger 1970:51 nom. inval.
Echinocereus pentalophus var. subarticulatus* Weniger 1970:51 nom. inval. (no basionym given).
  = Cereus pentalophus var. subarticulatus.
*Echinocereus pentlandii = Echinopsis pentlandii.
Echinocereus perbellus Britton & Rose 1922:24-25.
  Type - locality: Texas, Big Springs; Rose & Standley 12215, 23 Feb.1910 (US 635015, 635016).
    Nomenclatural synonyms:
      Echinocereus reichenbachii var. perbellus (Britton & Rose) Benson 1969d:127.
      Echinocereus caespitosus var. perbellus* Weniger 1970:23 nom. inval.
      Echinocereus reichenbachii subsp. perbellus* Blum 1997 Seed List nom. nud.
        Note: Considered a taxonomic synonym of  E. reichenbachii subsp. caespitosus by Blum et al. (1998b:334).
*Echinocereus persolutus [from Peru and thus not an Echinocereus].
Echinocereus phaeacanthus* Cactus & Succulent Journal (U.S.) 1951:104 nom. nud.
Echinocereus phoeniceus* Lemaire 1868:57 nom. nud.
  [Probably = Echinocereus coccineus].
Echinocereus phoeniceus* Engelmann ex Rumpler 1886:788 nom. illegit.
  basionym: Cereus phoeniceus Engelmann 1856:284 which was a new name for Echinocereus coccineus Engelman 1848:94.
Echinocereus phoeniceus* var. albispinus Hort. ex Rumpler 1886:789.
Echinocereus phoeniceus* fa. brevispinus Engelmann ex Schelle 1907:138 nom. nud.
Cereus phoeniceus subsp. conoideus Engelmann 1857:37.
  = Echinocereus conoideus.
Echinocereus phoeniceus* var. conoideus Schumann 1896:150.
  = Echinocereus conoideus.
Echinocereus phoeniceus* fa. densus Schelle 1907:138 nom. nud.
Echinocereus phoeniceus* var. inermis Schumann 1896:150.
  (see Echinocereus coccineus var. inermis).
Echinocereus phoeniceus* var. longispinus Hort. ex Rumpler 1886:789.
Cereus phoeniceus var. pacificus Engelmann ex Orcutt 1886:46.
  [see Echinocereus pacificus].
Echinocereus phoeniceus* var. rufispinus Hort. ex Rumpler 1886:789.
Echinocereus phoeniceus* fa. utahensis* Schelle 1907:138 nom. nud.
Echinocereus pleiogonus Croucher 1878:290.
  Type - locality: unknown [based on the illustration perhaps an Echinopsis].
Echinocereus pleiogonus* Labouret ex Rumpler 1886:828-829 nom. illegit. (later homonym).
  basionym: Cereus pleiogonus Labouret 1853:317.
    Type - locality: unknown; ? (?).
Echinocereus plomosus* Kohres Catalog 1984. nom. nud.
  [= Lau 768 from Plomosos, Coahuila ].
Echinocereus polichephalus* Daul 1890:78 nom. nud.
Echinocereus polycephalus* Hort. Berol. ex Haage 1897 nom. nud.
Echinocereus polyacanthus Engelmann 1848a:104.
  Type - locality:Mexico, Chihuahua, Cosihuiriachi; Wislizenus, 1846 (MO 2016721).
    Nomenclatural synonyms:
      Cereus polyacanthus (Engelmann) Engelmann 1849:50.
      Echinocereus triglochidiatus var. polyacanthus (Engelmann) Benson 1944:253.
Echinocereus polyacanthus var. acifer* Parker 1996:4 nom. nud.
  = Echinocereus acifer.
Echinocereus polyacanthus subsp. acifer (Otto ex Salm-Dyck) Taylor 1997:9.
  = Echinocereus acifer.
Echinocereus polyacanthus var. acifer fa. huitcholensis* Parker 1996:4. nom. nud.
  = Echinocereus huitcholensis.
Echinocereus polyacanthus var. acifer fa. matthesianus* Parker 1996:4 nom. nud.
  = Echinocereus matthesianus*.
Echinocereus polyacanthus var. albispinus Hort. ex Schelle 1926:179.
  Type - locality: unknown; ? (?).
Echinocereus polyacanthus var. bergeanus Fobe 1911:56.
  Type - locality: unknown; ? (?).
Echinocereus polyacanthus var. bergeanus* Hort ex Schelle 1926:179 nom. illegit. (later homonym).
Echinocereus polyacanthus var. densus (Regel) Taylor 1984:159.
  = Echinopsis valida var. densa Regel 1852:295.
    Note: This name is used by Taylor (1984) as the name of Echinocereus acifer.
Echinocereus polyacanthus var. durangensis* Parker 1996:4 nom. nud.
  = Echinocereus durangensis.
Echinocereus polyacanthus var. durangensis fa. marksianus* Parker 1996:4 nom. nud.
  = Echinocereus marksianus.
Echinocereus polyacanthus var. galtieri (Rebut ex Fobe) Schelle 1926:179.
  = Echinocereus galtieri.
Echinocereus polyacanthus var. huitcholensis (Weber) Taylor 1988:82.
  = Echinocereus huitcholensis.
Echinocereus polyacanthus subsp. huitcholensis (Weber) Taylor 1997:9.
  = Echinocereus huitcholensis.
Echinocereus polyacanthus var. leeanus* Parker 1996:4 nom. nud.
  = Echinocereus leeanus.
Echinocereus polyacanthus var. longispinus Hort. ex Schelle 1926:179.
  Type - locality: unknown; ? (?).
Echinocereus polyacanthus var. mombergerianus* Parker 1996:4 nom. nud.
  = Echinocereus mombergerianus.
Echinocereus polyacanthus subsp. mombergerianus (Frank) Breckwoldt & Matylewicz 1996:15.
  = Echinocereus mombergerianus.
Echinocereus polyacanthus var. neomexicanus* Weniger 1970:44 nom. inval. (no basionym given).
  = Echinocereus neomexicanus.
Echinocereus polyacanthus var. nigrispinus Fobe 1911:55.
  Type - locality: unknown; ? (?).
Echinocereus polyacanthus var. nigrispinus* Hort. ex Schelle 1926:179 nom. illegit. (later homonym).
Echinocereus polyacanthus var. pacificus (Engelmann ex Orcutt) Taylor 1984:160.
  = Echinocereus pacificus.
Echinocereus polyacanthus subsp. pacificus (Engelmann ex Orcutt) Breckwoldt in Breckwoldt & Matylewicz 1996:15.
  = Echinocereus pacificus.
Echinocereus polyacanthus var. rosei* Weniger 1970:43 nom. inval. (no basionym given).
  = Echinocereus rosei.
Echinocereus polyacanthus var. rufispinus Fobe 1911:55-56.
  Type - locality: unknown; ? (?).
Echinocereus polyacanthus var. rufispinus* Hort. ex Schelle 1926:179 nom. illegit. (later homonym).
Echinocereus polycephalus* Blanc 1888:39 nom. nud.
Echinocereus polycephalus* Hort. Berol. ex Haage 1900:160 nom. nud.
Echinocereus polycephalus* var. albispinus* Frič 1924:121 nom. nud.
Echinocereus polycephalus* var. brevinigrispinus* Frič 1924:121 nom. nud.
Echinocereus polycephalus* var. nigrispinus* Frič 1924:121 nom. nud.
Echinocereus polycephalus* var. spinosissimus* Frič 1924:121 nom. nud.
Echinocereus polycephalus var. xphoeniceus* Frič 1924:121 nom. nud.
Echinocereus polypus* Frič 1924:121 nom. nud.
Echinocereus poselgeri Lemaire 1868:57 [A new name needed because of earlier homonym].
  = Cereus tuberosus Poselger 1853:131 nom. illegit. (later homonym) [not Cereus tuberosus Pfeiffer 1837.]
    Type - locality: Texas, near Rio Grande River, above Belleville; Poselger, 1850 (MO 2015481).
      Nomenclatural synonyms:
        Echinocereus tuberosus* Rumpler 1886: 131 nom. illegit.
        Cereus poselgeri Coulter 1896:398.
        Wilcoxia poselgeri (Lemaire) Britton & Rose 1909:434.
        Wilcoxia tuberosa* Berger 1929:134 nom. illegit.
Echinocereus poselgeri fa. australis* Parker 1996:6 nom. nud.
Echinocereus poselgeri subsp. gerherdii Waldeis et al. 2008:53.
  Type - locality: Mexico,Nuevo Leon, Municipio Garcia, Sierra el Fraile; Köhres 8964 (KR 20011).
Echinocereus poselgeri subsp. kroenleinii (Cartier) Lange 1995:138.
  = Wilcoxia kroenleinii Cartier 1980 (Succulentes 2(2) :2-3). [see Echinocereus kroenleinii].
Echinocereus poselgeri fa. kroenleinii* Parker 1996:6 nom. nud.
  = Echinocereus kroenleinii.
Echinocereus poselgeri fa. tamaulipensis* Parker 1996:6 nom. nud.
  = Echinocereus tamaulipensis.
Echinocereus poselgeri fa. tuberosa* Parker 1996:6 nom. nud.
Echinocereus poselgeri var. waldeisii* Parker 1996:6 nom. nud.
  = Echinocereus waldeisii.
Echinocereus poselgeri var. waldeisii fa. deherdtii* Parker 1996:6 nom. nud.
  = Echinocereus tamaulipesis var. deherdtii.
Echinocereus poselgerianus Linke 1857:239.
  Type - locality: Mexico; ? (?).
    Nomenclatural synonyms:
      Cereus poselgerianus (Linke) Berger 1905:80.
      Echinocereus blanckii var. poselgerianus (Linke) Backeberg 1960:1999.
        Note: usually considered a taxonomic synonym of Echinocereus berlandieri.
Echinocereus primolanatus* Schwarz ex Backeberg 1960:2043 nom. inval. (no type designated).
Echinocereus primolanatus Taylor 1985b:130.
  Type - locality: Mexico, Coahuila, Sierra Paila, north of Estacion Marte, cultivated by D. Parker, 1985 (K).
    Nomenclatural synonyms:
      Echinocereus primolanatus* Schwarz ex Backeberg 1960:2043 nom. inval. (no type designated).
Echinocereus princeps Foster 1861:163.
  Type - locality: unknown [Of unknown origin and perhaps from South America in which case it would not be an Echinocereus].
Echinocereus procumbens* Lemaire 1868:56 nom. nud.
  [Probably = Echinocereus procumbens Engelmann ex Rumpler].
Echinocereus procumbens (Engelmann) Engelmann ex Rumpler 1886:781.
  basionym: Cereus procumbens Engelmann 1849:50.
    Type - locality: Mexico, Tamaulipas, Burita at mouth of Rio Grande, St. Louis Volunteers, 1846 (MO).
      Nomenclatural synonyms:
        Echinocereus pentalophus var. procumbens (Engelmann) Fournier 1935:25.
        Echinocereus pentalophus fa. procumbens* Parker 1996:4 nom. nud.
        Echinocereus pentalophus subsp. procumbens (Engelmann) Blum & Lange in Blum et al.1998:129.
Echinocereus procumbens var. gracilior Dautw. ex Schelle 1926:165
  Type - locality: unknown; ? (?).
Echinocereus procumbens var. longispinus Hort. ex Hirscht 1902:135.
  Type - locality: unknown; ? (?).
Cereus propinquus Salm Dyck ex Otto 1833:366.
  = Echinocereus pentalophus var. simplex.
Echinocereus propinquus De Candolle ex Haage 1892:118.
  = Echinocereus pentalophus var. simplex.
Cereus propinquus var. subarticulatus* Pfeiffer ex Forster 1846:373 pro syn.
  = Echinocereus pentalophus var. subarticulatus.
Echinocereus pseudohempelii* Kunzler Cat. nom. nud.
  = Echinocereus kuenzleri.
Echinocereus pseudopectinatus (Taylor) Taylor 1989:74.
  = Echinocereus bristolii var. pseudopectinatus Taylor 1985b:120.
    Type - locality: Mexico, Sonora, Moctezuma; Lau 607, 1973, 21 June 1984 (K) , cultivated by Taylor.
      Nomenclatural synonyms:
        Echinocereus scopulorum subsp. pseudopectinatus* Blum & Lange in Blum et al. 1998b:342.
Echinocereus pubellus* Cactus and Succulents Journal (US) 7:5 1936 nom. nud.
Echinopsis pulchella var. flore kermesina* Haage ex Forster 1846:364. pro syn.
  = Echinocereus amoenus.
Echinopsis pulchella var. rosea* Labouret 1853:292. pro syn.
  = Echinocereus amoenus.
Echinocereus pulchellus (Martius) F. Seitz 1870:11. [see Taylor 1989:75 ].
  = Echinocactus pulchellus Martius 1832:342.
    Type - locality: Mexico, Hidalgo, Pachuca; Karwinsky (?).
      Nomenclatural synonyms:
        Cereus pulchellus Pfeiffer 1837:74.
        Echinonyctanthus pulchellus (Martius) Lemaire 1839:85.
        Echinopsis pulchella (Martius) Zuccarini ex Forster 1846:363.
          Note: Usually listed as Echinocereus pulchellus Schumann 1894:185.
Echinocereus pulchellus var. acanthosetus Arias & Guzman in Arias Montes et al. 1997:63.
  Type - locality: Mexico, Oaxaca, between Magdalena Jicotlan & Tepelmeme de Morelos; Arias, Guzman-Cruz & Gama 958,
    29 Oct. 1991 (MEXU).
  Nomenclatural synonyms:
    Echinocereus pulchellus subsp. acanthosetus (Arias & Guzman) Blum in Blum et al. 1998:261.
Echinocereus pulchellus subsp. acanthosetus (Arias & Guzman) Blum in Blum et al. 1998b:261.
  = Echinocereus pulchellus var. acanthosetus.
Echinocereus pulchellus var. amoenus (Dietrich) Forster ex Schumann 1897:253.
  = Echinocereus amoena.
Echinocereus pulchellus subsp. amoenus* Blum 1997 Seed List nom. nud.
  = Echinocereus amoenus.
Echinocereus pulchellus var. costatus Halda, Kupčak & Sladk.2000 in Acta Mus. Richnov. Sect. Nat., 7(1) : 34 (2000).
  Type - locality: San Luis Potosi/Zacatecas border; J.J. Halda; J. Sladkovský 8504131 (PR).
Echinocereus pulchellus var. sharpii Taylor 1989:75-77.
  Type - locality: Mexico, Nuevo Leon, near San Roberto; 1900m, 24o50´N 100 25´W, Gonzalez G. 1985 (seed), cult. N. P. Taylor,
    4 May 1988 (K).
  Nomenclatural synonyms:
    Echinocereus pulchellus subsp. sharpii (Taylor) Taylor 1997:9.
    Echinocereus sharpii* S & K Breckwoldt 1998:1. nom. nud.
    Echinocereus pulchellus subsp. sharpii.
Echinocereus pulchellus subsp. sharpii (Taylor) Taylor 1997:9.
  = Echinocereus pulchellus var. sharpii.
Echinocereus pulchellus subsp. sladkovskyi Halda & Kupčak 2000.Acta Mus. Richnov. Sect. Nat., 7(1): 34 (2000).
  Type - locality: Mexico, Hidalgo ; J.J. Halda; J. Sladkovský 850418033 (PR).
Echinocereus pulchellus subsp. venustus Blum & Rischer in Blum et al. 1998b:255.
    Type - locality: Mexico San Luis Potosi [Lau 1036]; W. Rischer, 5 Dec. 1974 (ZSS A 17984).
Echinocereus pulchellus var. weinbergii (Weingart) Taylor 1985a:272.
  = Echinocereus weinbergii.
Echinocereus pulchellus subsp. weinbergii (Weingart) Taylor 1997:9
  = Echinocereus weinbergii.
Echinocereus purpureus Lahman 1935:141-143.
  Type - locality: Oklahoma, near Medicine Park; Lahman (MO).
    Nomenclatural synonyms:
      Echinocereus caespitosus var. purpureus* Weniger 1970:23 nom. inval.
      Echinocereus reichenbachii var. purpureus* Parker 1996:5 nom. nud.
        Note: Considered a taxonomic synonym of E. reichenbachii subsp. caespitosus by Blum et al. (1998b:322).
Echinocereus radians Engelmann 1848a:104.
  Type - locality:Mexico, Chihuahua, Cosihuiriachi; Wislizenus, 1846 (MO).
    Nomenclatural synonyms:
      Cereus adustus var. radians (Engelmann) Engelmann 1849:50.
      Echinocereus adustus var. schwarzii fa. radians* Parker 1996:6 nom. nud.
        Note: Usually considered a taxonomic synonym of Echinocereus adustus.
Echinocereus raphicephalus Forster 1861:164.
  Type - locality: unknown; ? (?). [May be of South American origin and not an Echinocereus].
Echinocereus rayonesensis Taylor 1988:75-76.
  Type - locality: Mexico, Nuevo Leon, Rayones, Lau 1101 (K).
Echinocereus rayonesensis fa. barkeanus* Parker 1996:3 nom. nud.
  [Probably = Echinocereus barkeanus*].
Echinocereus rectispinus Peebles 1938:675.
  Type - locality: Arizona, hills near Nogales, 3900 ft.; Peebles SF 905 (US 1729266).
    Nomenclatural synonyms:
      Echinocereus fendleri var. rectispinus (Peebles) Benson 1944:259.
      Echinocereus fasciculatus var. rectispinus* Benson 1969d:131 pro syn.
      Echinocereus fendleri subsp. rectispinus (Peebles) Taylor 1997:9.
Echinocereus rectispinus var. robustus Peebles 1938:675.
  [see Echinocereus robustus Peebles].
Echinocactus reichenbachianus* Tersch. ex  Salm-Dyck 1842:20.
Echinocereus reichenbachianus* Linke 1857:83 nom. nud.
Echinocereus reichenbachianus Hort. ex Haage 1859:20. [See Echinocereus reichenbachii].
  = Echinocactus reichenbachianus Terscheck ex Fennel 1843:282 (Terscheck, Verzeichnis 3. According to Schumann 1897:271).
    Type - locality: Mexico; ? (?).
      Nomenclatural synonyms:
        Echinopsis pectinata var. reichenbachiana (Terscheck) Salm-Dyck 1845:26.
        Cereus reichenbachianus (Terscheck) Labouret 1853:318.
Echinocereus reichenbachianus* Engelmann ex Haage 1893:23.
  Note: See note under Echinocereus reichenbachii.
Echinocereus reichenbachianus* Engelmann ex Seitz 1878:11 nom. nud.
Echinocereus reichenbachianus* Engelmann ex Haage 1893:23 (according to Index Kewensis 2:813) nom. illegit. (later homonym).
Cereus reichenbachianus var. castaneus (Engelmann) Labouret 1853:319.
  = Echinocereus caespitosus var. castaneus.