Field number : ISI 366
Collector : International Succulent Introductions (previously International Succulent Institute)
Species : Mammillaria voburnensis 
Locality : Guatemala : (Zacapa, 200 miles North-East of Guatemala City, 738m)
Date : Septmeber 1960
Notes :
ISI377 is more columnar. See C&SJ 39:153
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Taxonomy of the Cactaceae - Joël Lodé = Mammillaria voburnensis
New Cactus Lexicon - David Hunt = Mammillaria karwinskiana
The International Plant Names Index : https://www.ipni.org
Mammillaria (Haworth 1812)
Mammillaria voburnensis (Scheer 1845)
http://www.mammillarias.net
Semeurs de cactus
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