Borzicactus icosagonus

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Borzicactus icosagonus (Kunth) Britton & Rose, Cactaceae 2: 160. 1920 sec. Hunt 2016

≡Cactus icosagonus Kunth, Nov. Gen. Sp. (quarto ed.) 6: 67. 1823 syn. sec. Hunt 2016
≡Cereus icosagonus (Kunth) DC., Prodr. 3: 467. 1828 syn. sec. Kew WCVP (2019)
≡Cleistocactus icosagonus (Kunth) F.A.C.Weber in Roland-Gosselin, Cleistocactus: 6. 1904 syn. sec. Hunt 2016
≡Binghamia icosagona (Kunth) Backeb., Kaktus-ABC: 197. 1936 ["1935"] syn. sec. Hunt 2016
≡Seticereus icosagonus (Kunth) Backeb. in Cactaceae (Berlin) 1937(2): 14. 1937 syn. sec. Hunt 2016
≡Matucana icosagona (Kunth) Buxb. in Krainz, Kakteen 54: C V b. 1973 syn. sec. Kew WCVP (2019)

=Cereus isogonus K.Schum., Gesamtbeschr. Kakt.: 102. 1897–1899 syn. sec. Kew WCVP (2019)

=Cereus aurivillus K.Schum. in Monatsschr. Kakteenk. 13: 67. 1903 syn. sec. Kew WCVP (2019)
≡Borzicactus aurivillus (K.Schum.) Britton & Rose, Cactaceae 2: 153. 1920 syn. sec. Hunt 2016
≡Binghamia aurivilla (K.Schum.) Backeb. in J. Cact. Succ. Soc. Amer. 4: 388. 1933 syn. sec. IPNI 2000+: 6 sept 2020
≡Seticereus aurivillus Backeb. in Cactaceae (Berlin) 1937(2): 14. 1937 syn. sec. Kew WCVP (2019)
–Binghamia aurivilla Backeb. in obs. in Blätt. Kakteenf. 1935(1): 7. 1935, nom. inval., syn. sec. Kew WCVP (2019)1,2

=Seticereus ferrugineus Backeb. in Cactaceae (Berlin) 1937(2): 14. 1937 syn. sec. Kew WCVP (2019)
≡Seticereus oehmianus var. ferrugineus Backeb. in Kakteenkunde 1943: 31. 1943 syn. sec. TROPICOS 1988+
≡Seticereus icosagonus var. ferruginea (Backeb.) Backeb., Kakteenlex.: 406. 1966 syn. sec. TROPICOS 1988+

=Seticereus oehmeanus Backeb. in Cactaceae (Berlin) 1937(2): 14. 1937 syn. sec. ???
≡Seticereus oehmianus Backeb. in Kakteen And. Sukk. 1: 186. 1937 syn. sec. TROPICOS 1988+
≡Seticereus icosagonus var. oehmeanus (Backeb.) Backeb., Cactaceae 2: 981. 1959 syn. sec. TROPICOS 1988+

=Seticereus icosagonus var. aurantiaciflorus Backeb. in Kakteenkunde 1943: 31. 1943 syn. sec. TROPICOS 1988+
≡Borzicactus icosagonus f. aurantiaciflorus (Backeb.) Krainz, Kakteen 15: C Vb. 1960 syn. sec. Kew WCVP (2019)

=Cleistocactus ×crassiserpens Rauh & Backeb., Descr. Cact. Nov. 1: 17. 1957 ["1956"] syn. sec. Kew WCVP (2019)
≡Loxanthocereus ×crassiserpens (Rauh & Backeb.) Backeb., Cactaceae 6: 3674. 1962 syn. sec. Kew WCVP (2019)
≡Borzicactus crassiserpens (Rauh & Backeb.) Lodé in Cact.-Avent. Int. 98(Suppl.): 3. 2013 syn. sec. Korotkova 2021
–Cleistocactus ×crassiserpens Rauh & Backeb. in Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl.: 321. 1958, nom. inval., syn. sec. Kew WCVP (2019)

=Loxanthocereus trujilloensis F.Ritter, Kakteen Südamerika 4: 1472. 1981 syn. sec. Kew WCVP (2019)

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