Field number : L 701
Collector : Alfred Bernhard Lau
Species : Mammillaria grahamii 
Locality : Mexicó : Chihuahua (Laguna de Santa Maria 1800m) * Geocode
Date : 27/05/1974
Notes :
together with L702, Echinocactus parryi
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Taxonomy of the Cactaceae - Joël Lodé = Mammillaria grahamii
New Cactus Lexicon - David Hunt = Mammillaria grahamii
The International Plant Names Index : https://www.ipni.org
Mammillaria (Haworth 1812)
Mammillaria grahamii (Engelmann 1856)
http://www.mammillarias.net
Semeurs de cactus
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