Mammillaria thornberi subsp. yaquensis (R.T.Craig) D.R.Hunt, Mammillaria Postscripts 6: 5. 1997 Mammillaria thornberi subsp. yaquensis (R.T.Craig) D.R.Hunt, Mammillaria Postscripts 6: 5. 1997is new combination for Mammillaria yaquensis R.T.Craig, Mammill. Handb.: 320. 1945Taxon for this nameMammillaria thornberi subsp. yaquensis (R.T.Craig) D.R.Hunt