Pelecyphora dasyacantha subsp. chaffeyi (Britton & Rose) D.Aquino & Dan. Sanchez comb. nov.

Escobaria chaffeyi ≡ Escobaria chaffeyi Britton & Rose, Cactaceae 4: 56. 1923. Coryphantha chaffeyi (Britton & Rose) Fosberg, Bull. S. Calif. Acad. Sci. 30: 58. 1931. Mammillaria chaffeyi (Britton & Rose) Backeb., Neue Kakteen: 16. 1931. Escobaria dasyacantha var. chaffeyi (Britton & Rose) N.P.Taylor, Kakteen And. Sukk. 34: 157. 1983. Escobaria dasyacantha subsp. chaffeyi (Britton & Rose) N.P.Taylor, Cactaceae Consensus Init. 5: 13. 1998. Neobesseya dasyacantha subsp. chaffeyi (Britton & Rose) Lodé, Cact.-Avent. Int. 98(Suppl.): 6. 2013. Type. México, Zacatecas, near Cedros, Jun 1910, E. Chaffey 5 (lectotype, designated here: US [1821124 image!]; isolectotype: NY [image 271944!]). Notes. A label attached to the specimen deposited in the US (1821124!) indicates that this specimen was designated as a lectotype. However, the typification was not published, so it cannot be accepted (Turland et al. 2018). The sample is part of the original collection since it was collected in the type locality by E. Chaffey, coinciding with the data stipulated in the protologue. Therefore, we formalize the typification of the US specimen.

Escobaria fobei = Escobaria fobei Frič ex A.Berger, Kakteen: 280. 1929. Type. not designated.

Fobea viridiflora = Fobea viridiflora Frič ex Boed., Kakteenkunde 1933: 155. 1933. Escobaria chaffeyi f. viridiflora ( Frič) Říha, Kaktusy (Brno) 22: 25. 1986. Type: not designated.