Cochemiea mazatlanensis (K.Schum.) D.Aquino & Dan.Sanchez comb. nov.

Mammillaria mazatlanensis ≡ Mammillaria mazatlanensis K.Schum., Monatsschr. Kakteenk. 11: 154. 1901. Neomammillaria mazatlanensis (K.Schum.) Britton & Rose, Cactaceae 4: 138. 1923. Chilita mazatlanensis (K.Schum.) Orcutt, Cactography 2. 1926. Ebnerella mazatlanensis (K.Schum.) Buxb., Oesterr. Bot. Z. 98: 89. 1951. Escobariopsis mazatlanensis (K.Schum.) Doweld, Sukkulenty 3: 40. 2000. Type: México, Sinaloa, Matzatlán [ Mazatlán], W. Mundt s.n. (not preserved, lectotype, designated here, Monatsschr. Kakteenk. 15: 154. 1905: Illustration " Ma [m]millaria Mammillaria mazatlanensis K.Schum. Nach einer von Herrn Mundt für die "Monatsschrift für Kakteenkunde" hergestellten Photographie"). Notes. Both the original description of Mammillaria (= Cochemiea) Mammillaria mazatlanensis (Schumann 1901), and the later extension of the description by Gurke (1905) do not indicate that a type specimen has been preserved. Hunt (1985) confirms that a type specimen was not formally designated.

Mammillaria littoralis = Mammillaria littoralis K.Brandegee, Bull. Misc. Inform. Kew 1908: App. 91. 1908. Type: Not designed.

Neomammillaria occidentalis = Neomammillaria occidentalis Britton & Rose, Cactaceae 4: 161-162, f. 179. 1923. Chilita occidentalis (Britton & Rose) Orcutt, Cactography 2. 1926. Mammillaria occidentalis (Britton & Rose) Boed., Mammillarien-Vergleichs-Schluessel: 36. 1933. Ebnerella occidentalis (Britton & Rose) Buxb., Oesterr. Bot. Z. 98: 90. 1951. Mammillaria mazatlanensis var. occidentalis (Britton & Rose) Neutel., Succulenta (Netherlands) 65: 119. 1986. Type: México, Colima, near Manzanillo, Dec 1890, E. Palmer 1053 (holotype: US [208544 image!]).

Neomammillaria sinaloensis = Neomammillaria sinaloensis Rose, Fl. Indig. Sinaloa Cact.: 3. 1929. Nom. Inval.

Neomammillaria patonii = Neomammillaria patonii Bravo, Anales Inst. Biol. Univ. Nac. Mexico 2: 129. 1931. Mammillaria patonii (Bravo) Werderm., Backeberg, Neue Kakteen: 97. 1931. Mammillaria occidentalis var. patonii (Bravo) R.T.Craig, Mammill. Handb.: 169. 1945. Mammillaria mazatlanensis f. patonii (Bravo) Neutel., Succulenta (Netherlands) 65: 119. 1986. Mammillaria mazatlanensis subsp. patonii (Bravo) D.R.Hunt, Mammillaria Postscripts 7: 3. 1998. Escobariopsis mazatlanensis subsp. patonii (Bravo) Doweld, Sukkulenty 3: 41. 2000. Type: México, Sinaloa [Nayarit], Isla Tres Marías 1930, Heilfurth s.n. (MEXU).

Mammillaria occidentalis sinalensis = Mammillaria occidentalis var. sinalensis R.T.Craig, Mammill. Handb.: 169. 1945. Mammillaria patonii var. sinalensis (R.T.Craig) Backeb., Cactaceae 5: 3291. 1961. Mammillaria mazatlanensis f. sinalensis (R.T.Craig) Neutel., Succulenta (Netherlands) 65: 119. 1986. Type: México, Sinaloa, Arroyo de Ibarra, near Rosario 1940, E, Baxter s.n. (lectotype, designated here, Mammill. Handb.: 169. 1945: Illustration "f. 151 Mammillaria occidentalis var. sinalensis X 1"). Notes. The protologue indicates that the type specimen was collected, however, it is not mentioned in which herbarium it was deposited. Some specimens collected by Craig (1945) were deposited in the UC herbarium, currently fused with the CAS herbarium. A search was made in the CAS database (https://www.calacademy.org/scientists/botany-collections) and it was not possible to locate the material, on the other hand, type specimens deposited in CAS from UC apparently were lost (Breslin et al. 2021).

Mammillaria mazatlanensis monocentra = Mammillaria mazatlanensis var. monocentra R.T.Craig, Mammillaria Handb.: 242, 1945. Type: México, Sonora, Yaqui Valley, in the lower delta of the Río Yaqui 1936, J. Hilton & R. T. Craig s.n. (lectotype, designated here, Mammill. Handb.: 242. 1945: Illustration "f. 219 Mammillaria mazatlanensis var. monocentra X 1"). Notes. See Mammillaria occidentalis var. sinalensis