Field number : SB 432
Collector : Steven (Steve) Brack
Species : Mammillaria johnstonii 
Locality : Mexicó : Sonora (San Carlos Bay) * Geocode
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Taxonomy of the Cactaceae - Joël Lodé = Mammillaria johnstonii
New Cactus Lexicon - David Hunt = Mammillaria johnstonii
The International Plant Names Index : https://www.ipni.org
Mammillaria (Haworth 1812)
Mammillaria johnstonii ((Britton & Rose) Orcutt 1926)
http://www.mammillarias.net
Semeurs de cactus
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