Referred and other superfluous names F. acanthodes Britton & Rose, Cact. 3:129, figs. 134137,p1.l5 (1922); N. P. Taylor, Cact. Succ. J. (GB) 41 (4): 91 (1979); Lindsay, Ferocactus 281, 290-308 (1996) (1955 thesis, unpublished at the time).. Although Taylor has referred this species to F. cylindraceus, there is a swell of opinion which favours the retention of this more common, long used epithet, not least by Gottfried Unger in his recent work, who uses it in preference to F. cylindraceus. As indicated in the main text we regard Taylor's argument as soundly based and therefore prefer the use of F. cylindraceus - see under that name. Nigel Taylor has commented in personal communication that the epithet 'acanthodes' "can only be retained in its popular sense if 'conserved' with a new type, but the use of 'cylindraceus' over the past 10 years or more, makes this unlikely to succeed." var. eastwoodiae L. Benson, Cacti of Arizona ed.3:23 (1969) Referred to F. cylindraceus subsp. eastwoodiae.
F. arizonicus (Kunze) Orcutt, Caetography (1922); Kunze, Monatsschr. Kakteenk. 19:149 (1909); N. P. Taylor, Bradleya 2:34 (1984). Referred to F. wislizeni.
F. bieolor (Galeotti ex Pfeiffer) N. P. Taylor, Caet. Suce. J. (GB) 41(2):30 (1979); CITES Cactaceae Checklist 58 (1999) Referred to Thelocactus. var. bolaensis (Runge) N. P. Taylor, I.e. Referred to Thelocactus.
var..fla.vidispinus (Baekeberg) N. P. Taylor, I.e. Referred to Thelocactus. var. schwarzii (Baekeberg) N. P. Taylor, I.e. Referred to Thelocactus.
F. californicus (Labouret) Y. Ito, Cacti 103 (1952); N. P. Taylor, Bradleya 2:31 (1984) Referred to F. viridescens.
var. lecontei (Engelmann) Lindsay, Cact. Succ. J. (US) 27(6): 169 (1955); Engelmann, Proc. Amer. Acad. 3:274 (1856) Referred to F. cylindraceus subsp. lecontei. var. tortulospinus (Gates) Lindsay, Cact. Succ. J. (US) 27(6)168 (1955); Gates, Cact. Succ. J. (US) 4(9):343 (1933) Referred to F. cylindraceus subsp. tortulispinus. "rostii form" (syn. F. rostii Britton & Rose), N. P. Taylor, Bradleya 2:33 (1984); Lindsay, Ferocactus 290, 310 (1996) (1955 thesis, unpublished at the time). Referred to F. cylindraceus.
F. alamosanus var. platygonus Lindsay, Cact. Succ. J. (US) 14(10-11):139 (1942) Referred to F. pottsii.
106
F. coloratus Gates, Cact. Suee. J. (US) 4(9):344
(1933); N. P. Taylor, Bradleya 2:30 (1984) Referred to F. gracilis subsp. coloratus. F. coptonogonus (Lemaire) N. P. Taylor, Caet. Suce.
J. (GB) 42(4):108 (1980); CITES Cactaceae Checklist 58 (1999) Referred to Stenocactus.
[F.] Echinocactus cornigerus De Candolie, (1828) Referred to F. latispinus. F. covillei Britton & Rose, Caet. 3: 132-3, figs.
138,139 (1922); N. P. Taylor, Bradleya 2:37 (1984); Lindsay, Feroeaetus
193 (1996) (1955
unpublished at the time). Referred to F. emoryi.
thesis,
