Field number : L 81
Collector : Alfred Bernhard Lau
Species : Mammillaria gueldemanniana v. guirocobensis 
Locality : Mexicó : Sonora (Guirocoba , Alamos 800-1000m) * Geocode
Date : 10/04/1973
Notes :
together with Mammillaria sonorensis, Echinocereus stoloniferus, Echinocereus subinermis
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Taxonomy of the Cactaceae - Joël Lodé = Mammillaria sheldonii
New Cactus Lexicon - David Hunt = Error : not found in the Database
The International Plant Names Index : https://www.ipni.org
Mammillaria (Haworth 1812)
Mammillaria gueldemanniana
http://www.mammillarias.net
Semeurs de cactus
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