Mammillaria mystax

{{Short description|Species of cactus}}

{{More citations needed |date=December 2014}}

{{Speciesbox

|image = Mammillaria mystax 03.jpg

|status = LC

|status_system = IUCN3.1

|genus = Mammillaria

|species = mystax

|authority = Mart., 1832

|synonyms = {{Specieslist|

Mammillaria atroflorens|Backeb.|

Mammillaria casoi|Bravo|

Mammillaria erythra|Repp.|

Mammillaria huajuapensis|Bravo|

Mammillaria mixtecensis|Bravo

}}

}}

Mammillaria mystax is a species of cactus in the subfamily Cactoideae.{{cite web |url= http://www.catalogueoflife.org/annual-checklist/2014/details/species/id/13438371|title= Species 2000 & ITIS Catalogue of Life: 2014 Annual Checklist.|author= Roskov Y.|author2= Kunze T.|author3= Orrell T.|author4= Abucay L.|author5= Paglinawan L.|author6= Culham A.|author7= Bailly N.|author8= Kirk P.|author9= Bourgoin T.|author10= Baillargeon G.|author11= Decock W.|author12= De Wever A.|editor= Didžiulis V.|year= 2014|publisher= Species 2000: Reading, UK.|accessdate= 26 May 2014}}

It is endemic to the Mexican states of Hidalgo, Oaxaca and central Puebla.